Web app ideas.

// 189 ideas

• Allergy action cards for sitters and schools

  Parents of allergic kids re-explain epinephrine plans to every sitter; generate wallet cards, fridge sheets, and school forms from one profile.

  Consumer weekend

• Automatic monthly reports for website care plans

  Freelancers selling monthly website care plans spend hours writing what-we-did reports; this pulls uptime, updates, and backups into a branded PDF.

  Micro-SaaS 1 week

• Deprecation countdowns for the APIs you use

  Stripe and Shopify deprecations hide in changelogs until things break; this scans your code for affected calls and gives you a countdown.

  Dev tool 1 month

• Compliant labels for cottage food producers

  Home bakers and small food producers hand-make labels that violate state cottage food rules; this generates compliant labels with allergens per state.

  B2B weekend

• Body-doubling app for ADHD focus

  Match people into silent 50-minute co-working video sessions. Body doubling is a proven ADHD focus technique with a community already paying for it.

  SaaS 1 week

• Session planner for backyard astrophotographers

  Astrophotographers waste rare clear nights on poorly placed targets; a planner matching target visibility, moon phase, and your exact rig and site.

  Consumer 1 month

• App store reviews filed as GitHub issues

  Bug reports buried in app store reviews never reach the tracker; this clusters new reviews and files deduped GitHub issues nightly.

  Dev tool 1 week

• Gig money splitting for working bands

  Working bands split gig pay with screenshot math and grudges; log the gig, set cuts and expenses, and everyone sees who owes what plus tax totals.

  Micro-SaaS weekend

• Hour compliance tracker for host families

  Host families risk State Department violations tracking au pair hours on paper; log schedules against weekly and daily limits with warnings.

  Consumer 1 week

• Nightly restore drills for database backups

  A backup you've never restored is a guess; this restores your Postgres dump to a scratch instance nightly and proves the data is intact.

  Dev tool 1 week

• Belt testing and curriculum tracker for martial arts schools

  Martial arts school owners track student stripes and testing eligibility on index cards; this tracks progress, flags who is ready, and runs test day.

  B2B 1 week

• Target species finder for birding trips

  Traveling birders manually cross-check life lists against trip locations; connect eBird and see exactly which target species a trip could add.

  Consumer 1 week

• Rent collection for salon booth renters

  Salon owners chase booth rent in cash and texts; this auto-bills weekly rent, tracks renter insurance and license expiry, and flags late payers.

  B2B 1 week

• Tap list sync for breweries

  Breweries retype tap lists into their site, TV, and print menus; update once and sync everywhere, including a taproom TV display.

  SaaS weekend

• Client document chasing for bookkeepers

  Bookkeepers stall every month-end waiting on client documents; a per-client checklist portal with escalating reminders until items arrive.

  SaaS 1 week

• Hosted monitoring and alerts for BullMQ queues

  A stuck BullMQ queue can silently eat jobs for days; hosted dashboards, dead-letter alerts and retry controls without running Grafana.

  Dev tool 1 week

• CACFP meal counting and claims for daycares

  Daycares in the federal food program hand-tally meal counts for reimbursement; this records point-of-service counts and builds the monthly claim.

  B2B 1 month

• Tool calibration due-date tracker for machine shops

  Machine shops fail ISO audits over out-of-cal micrometers and gauges; this tracks every instrument's calibration schedule and prints audit records.

  B2B weekend

• Call sheets and crew confirmations for video producers

  Small video production teams rebuild call sheets in Docs for every shoot; this generates them from a shoot record and collects crew confirmations.

  B2B 1 week

• Seasonal site management for campgrounds

  Small campgrounds manage seasonal site renewals on index cards; renewals, waitlists, and metered electric billing for seasonal campers.

  SaaS 1 month

• Sports card catalog with live comps

  Card collectors price their collections tab by tab through eBay sold listings; catalog cards once and get live comps and portfolio value in one place.

  Consumer 1 week

• Cancellation alerts for booked-out campgrounds

  Sold-out campgrounds release cancellations daily and campers miss them; watch your dates at chosen parks and get instant availability alerts.

  Consumer 1 month

• Carrier onboarding for small freight brokers

  Freight brokers onboard trucking carriers via email attachments and FMCSA lookups; this automates packet collection, insurance checks, and vetting.

  B2B 1 month

• Banquet event orders for independent caterers

  Caterers rebuild event details across quotes, kitchen sheets, and packing lists; this builds one BEO that generates all three plus change tracking.

  B2B 1 month

• Certified payroll reports for small contractors

  Contractors on government jobs must file WH-347 certified payroll weekly; this turns timesheets into compliant reports without a payroll consultant.

  B2B 1 month

• Sweep certificates and annual reminders for chimney sweeps

  Chimney sweeps hand-write the certificates insurers demand and forget last year's customers; issue branded PDF certificates plus annual rebooking nags.

  Micro-SaaS weekend

• Volunteer scheduling with swaps for small churches

  Small-church volunteer rotas live in spreadsheets and group chats; this schedules teams, texts reminders, and handles swaps without the coordinator.

  Micro-SaaS 1 week

• Student endorsement tracking for flight instructors

  Flight instructors track student solo endorsements and expirations in paper logbooks; this tracks every endorsement's expiry and requirement gaps.

  Micro-SaaS 1 week

• QA inspections for commercial cleaning companies

  Janitorial companies lose contracts over quality complaints; this runs scored walkthrough inspections with photos and sends clients the report.

  B2B 1 week

• Document chasing portal for bookkeepers

  Bookkeepers waste hours nagging clients for bank statements and receipts; this sends a checklist link and auto-reminds until every document lands.

  B2B 1 week

• Project handoff portals for freelance developers

  Freelance devs end projects with a messy Drive dump; hand clients one branded portal with credentials, docs, videos and renewal dates.

  Dev tool 1 week

• Shared college application deadline board

  Parents and teens track a dozen application deadlines in separate heads; one shared board for essays, deadlines, fees, and scholarship dates.

  Consumer 1 week

• Privacy-first usage analytics for CLI tools

  CLI authors ship blind with zero usage data; a privacy-first telemetry SDK and dashboard shows commands run, versions, and error rates.

  Dev tool 1 week

• Permit and inspection deadline tracking for contractors

  GCs let permits lapse and miss inspection windows, stalling jobs; this tracks every permit's expiry and inspections across all active projects.

  Micro-SaaS 1 week

• Piracy detection for course creators

  Course creators lose sales to pirated copies on Telegram and forum dumps; automated scans find leaks and generate DMCA takedowns in one click.

  Micro-SaaS 1 month

• Printable pace bands adjusted for course hills

  Marathoners run even splits on hilly courses and blow up; generate a printable pace band adjusted for the actual elevation profile of the race.

  Consumer weekend

• Custom cake orders with deposits and date caps

  Home bakers manage custom cake orders in Instagram DMs and get stiffed on deposits; an order form takes specs, caps busy weekends, collects deposits.

  Micro-SaaS 1 month

• Share management for CSA farms

  CSA farms drown in spreadsheets managing shares; subscriptions, weekly box swaps, vacation holds, and pickup-site rosters in one place.

  SaaS 1 month

• Box customization portal for CSA farms

  CSA farms field endless emails about swapping kale for carrots; this lets members customize their weekly box within limits the farm sets.

  B2B 1 month

• Custom cake order intake for bakers

  Home bakers take custom cake orders in Instagram DMs and miss details; a structured order form with date capacity, deposits, and a pickup calendar.

  SaaS weekend

• License compliance report for procurement reviews

  Enterprise procurement asks for a license audit and you stall the deal; one CI run outputs a clean report and flags GPL surprises.

  Dev tool weekend

• Dead code cleanup for AI-built codebases

  AI coding sessions leave orphan files and duplicate components everywhere; this maps the dead weight in a repo and opens deletion PRs.

  Dev tool 1 month

• Case tracking and due dates for dental labs

  Small dental labs track crowns and dentures on whiteboards and blow due dates dentists never forget; this tracks each case from impression to delivery.

  Micro-SaaS 1 month

• License-plate instant quotes for mobile detailers

  Mobile detailers lose leads to quote phone-tag; customers enter a plate, the tool looks up vehicle size and returns a firm, bookable price.

  Micro-SaaS 1 week

• Image size diffs on every pull request

  Docker images balloon a layer at a time; a CI comment shows the size diff on every PR and names the layer that caused it.

  Dev tool weekend

• Detention time logger for owner-operator truckers

  Truckers wait unpaid hours at docks because they can't prove detention; this timestamps arrival and departure with GPS and generates billing evidence.

  B2B weekend

• Vaccine expiry tracking for dog daycares

  Dog daycares get burned by expired rabies records at check-in; track vaccine expirations and auto-request updated records from owners.

  SaaS 1 week

• Scheduling and progress for driving schools

  Driving schools juggle instructors, pickups, and permit rules by phone; scheduling with pickup locations, lesson packages, and test readiness tracking.

  SaaS 1 month

• CI that keeps docs code samples working

  Docs code samples rot until users hit errors; this extracts every snippet, runs it in CI, and fails the build when examples break.

  Dev tool 1 week

• Container dispatch for roll-off dumpster rentals

  Roll-off dumpster companies lose track of where containers sit; container inventory, drop and swap scheduling, and automatic overage-day billing.

  SaaS 1 week

• Live 86 board for restaurant kitchens and servers

  Servers sell dishes the kitchen ran out of, causing comps and angry tables; this is a live 86 list the kitchen updates and every server phone shows.

  B2B weekend

• Match medical bills against your EOBs

  Patients pay medical bills without checking them against EOBs; upload both, match the line items, and flag charges insurance says you do not owe.

  Consumer 1 month

• Room reset checklists for escape rooms

  Escape rooms refund games ruined by a missed prop reset; per-room reset checklists with photo checks that staff run between bookings.

  SaaS weekend

• Made-to-order production board for Etsy sellers

  Made-to-order Etsy sellers juggle deadlines on paper lists; this turns orders into a production queue sorted by ship-by date with batching.

  Micro-SaaS 1 week

• Vendor management for farmers market organizers

  Farmers market managers run applications and stall maps in spreadsheets; vendor applications, insurance docs, stall assignments, and fee invoicing.

  SaaS 1 month

• Fair picking rounds for family heirlooms

  Dividing a parent's belongings quietly turns siblings against each other; photograph items and run fair round-robin picks everyone agreed to.

  Consumer 1 week

• Dues and payout ledger for fantasy leagues

  Fantasy commissioners chase buy-ins all season and track payouts in DMs; a league ledger with payment links and public who-has-paid status.

  Consumer weekend

• Resume builder for federal job applications

  USAJobs rejects normal resumes for missing hours, GS grades, and formats; a builder that outputs compliant federal resumes from a guided intake.

  Consumer 1 week

• Stale feature flag cleanup bot

  Stale feature flags rot into dead branches nobody dares touch; this finds flags at 100% rollout and opens the cleanup PR for you.

  Dev tool weekend

• Filament inventory and print cost tracker

  3D printing hobbyists lose track of half-used spools and real print costs; inventory filament by weight and get true cost per print automatically.

  Consumer weekend

• Location calendar and alerts for food trucks

  Food trucks announce locations in scattered Instagram posts; one weekly schedule that updates the website, Google profile, and fan SMS alerts.

  SaaS 1 week

• Order and route manager for firewood sellers

  Firewood sellers run phone-order chaos every fall; an order page with cord pricing by delivery zone, a route list, and payment collection.

  SaaS weekend

• Auto-updating location page for food trucks

  Food truck fans ask where are you today all day; one drag-pin schedule updates a public page, business hours, and an SMS blast at once.

  Micro-SaaS weekend

• Medication board for rescue foster homes

  Rescue fosters juggle med schedules for a rotating cast of animals; a per-animal med board with dose logs the rescue coordinator can see.

  Consumer 1 week

• Flaky test detector for GitHub Actions

  Flaky tests waste hours of CI reruns; this analyzes GitHub Actions history, ranks the worst offenders, and auto-quarantines them via PR.

  Dev tool 1 month

• Health inspection prep logs for food trucks

  Food truck operators fail health inspections over missing temp and cleaning logs; this is a dead-simple daily log that prints inspector-ready records.

  B2B weekend

• Seed starting calendar from your frost date

  Vegetable gardeners guess sowing dates and miss succession windows; enter a frost date and get a week-by-week seed starting and planting calendar.

  Consumer 1 week

• Invoice chaser for freelancers

  Automatically send polite, escalating follow-up emails for unpaid invoices. Freelancers hate chasing money more than any other task.

  Micro-SaaS weekend

• Fast printed program layouts for funeral homes

  Funeral homes lay out memorial programs in Word under 48-hour deadlines; families fill a link with photos and text, a print-ready program comes out.

  Micro-SaaS weekend

• Vaccination record chasing for dog groomers

  Grooming salons must verify rabies records but chase owners by phone; this tracks expiries and auto-texts owners for updated certificates.

  Micro-SaaS weekend

• Photo gallery expiry warnings that sell prints

  Wedding photographers' client galleries expire silently; drip gallery-closing emails to clients and guests to drive last-chance print sales.

  Micro-SaaS weekend

• Remote-updated day clock for aging parents

  Families of elders with memory loss field the same what-day-is-it calls; a wall tablet shows today's schedule and photos, updated remotely by family.

  Consumer 1 month

• Grant deadline and report tracker for nonprofits

  Small nonprofits blow grant report deadlines and jeopardize renewals; this tracks every award's deliverables with owner assignments and reminders.

  B2B weekend

• Production board for made-to-order sellers

  Made-to-order sellers lose orders in Etsy and Shopify tabs; one production board with stages and ship-by-date risk flags across both shops.

  SaaS 1 week

• Photo to mailed HOA violation notice

  Small HOA managers snap a photo, pick a rule, and the tool generates, prints, and certified-mails the compliant violation letter with an audit trail.

  Micro-SaaS 1 month

• Seasonal CRM for holiday light installers

  Holiday light installers rebuild their book every season; quotes by linear foot, install and takedown crews, and auto rehang offers next fall.

  SaaS 1 week

• Violation tracking for self-managed HOAs

  Self-managed HOA boards track violations in email threads; log them with photos, generate escalating notice letters, and track cure deadlines.

  SaaS 1 week

• Visit reports for home watch companies

  Home watch companies checking snowbird houses report by text and photos; guided visit checklists that produce branded, timestamped PDF reports.

  SaaS 1 week

• Waitlist and tour management for home daycares

  Home daycares track waitlists in notebooks and lose families to ghosting; this ranks the waitlist, schedules tours, and collects holding deposits.

  Micro-SaaS 1 week

• Violation letters with photo evidence for HOA managers

  HOA managers draft violation notices one by one in Word; this logs violations with photos, generates escalating letters, and tracks cure deadlines.

  B2B weekend

• Barn management for horse boarding stables

  Boarding barns run feed charts and board billing on whiteboards; stall assignments, per-horse care instructions, and monthly billing with add-ons.

  SaaS 1 month

• Maintenance agreement tracker for HVAC shops

  Small HVAC shops lose recurring revenue when service agreements lapse; this tracks contracts, auto-reminds customers, and schedules seasonal visits.

  B2B 1 week

• Board billing with add-ons for horse barns

  Barn managers rebuild each month's board bill from texts and memory; log add-ons like farrier, meds, and extra hay as they happen, invoices build themselves.

  Micro-SaaS 1 month

• State-compliant hour logs for homeschool parents

  Homeschool parents in reporting states reconstruct required hours and portfolios each June in a panic; quick daily logs roll up into state-ready reports.

  Micro-SaaS 1 week

• Photo quotes for junk removal crews

  Junk removal crews waste half a day driving to estimates; customers text photos, you price from a quote board, they book and pay online.

  SaaS weekend

• Missing translation catcher for locale files

  Shipping with missing translation keys embarrasses you in every locale; CI catches drift between locale files and drafts the gaps.

  Dev tool weekend

• Maintenance agreement billing for HVAC shops

  HVAC shops sell maintenance agreements then lose track of them; recurring billing, spring and fall visit due lists, and renewal tracking.

  SaaS 1 month

• Supplier price change alerts from restaurant invoices

  Restaurants miss quiet supplier price creep that wrecks food cost; this OCRs delivery invoices and alerts when any item's unit price jumps.

  B2B 1 month

• Keg fleet tracking for self-distributing breweries

  Small breweries lose about a tenth of their kegs yearly to bars that never return them; scan-out and scan-in shows which account is sitting on what.

  Micro-SaaS 1 week

• Kiln firing scheduler for pottery studios

  Pottery studios book kiln firings through a wall calendar; members reserve shelf space per firing and pay online, staff see what to load.

  SaaS 1 week

• Clean RSVP pages for kids parties

  Kids party invites die in ad-swamped Evite threads and unanswered texts; a clean RSVP page collecting headcount and allergies with no app needed.

  Consumer weekend

• Customer skip requests that fix lawn routes

  Lawn crews get skip-this-week texts at 6am and eat the drive time; customers skip via link, the route re-sequences, and billing adjusts itself.

  Micro-SaaS 1 month

• Utility rebilling calculator for small landlords

  Landlords with shared meters split utilities by hand and get disputes; enter the bill, pick an allocation method, send itemized charges to tenants.

  Micro-SaaS 1 month

• Hosted license keys for indie software sellers

  Selling a desktop app or plugin means building license keys from scratch; a hosted API issues, validates and revokes keys with Stripe sync.

  Dev tool 1 week

• Certification-aware scheduling for aquatic centers

  Aquatic centers juggle lifeguard shifts against expiring CPR and rescue certs; scheduling that blocks uncertified staff and forecasts recert gaps.

  B2B 1 month

• Unit turnover board for property managers

  Property managers coordinate paint, clean, and repair between tenants over text; this is a per-unit make-ready checklist with vendor deadlines.

  B2B 1 week

• Token cost breakdown per feature and customer

  Your OpenAI bill is one opaque number; a drop-in proxy tags every call so you see token spend per feature, per customer, per deploy.

  Dev tool 1 week

• Slip waitlists and renewals for marinas

  Marinas run slip waitlists on paper and clipboard renewals; waitlists matched by boat length and draft, with offers, deposits, and renewals online.

  SaaS 1 week

• Makeup class credit tracker for tutoring centers

  Tutoring centers and music schools lose money and goodwill mis-tracking missed-class makeup credits; this tracks credits, expiry, and redemptions.

  B2B weekend

• Stall fees and attendance for market managers

  Farmers market managers collect stall fees in cash envelopes and track vendors on clipboards; this handles invoicing, no-shows, and stall maps.

  Micro-SaaS 1 week

• Vendor and stall management for market organizers

  Farmers market organizers wrangle vendor applications, insurance docs, and stall maps in email; this handles applications, assignments, and fees.

  B2B 1 week

• Fast SOAP notes with body diagrams for massage therapists

  Solo massage therapists owe insurers and boards SOAP notes but hate typing after sessions; tap a body diagram, get a compliant note in a minute.

  Micro-SaaS 1 month

• Uptime and schema drift monitor for MCP servers

  MCP servers fail silently and agents just get dumber; uptime checks plus tool-schema drift alerts for the servers your team depends on.

  Dev tool weekend

• Treatment package balance tracker for med spas

  Med spas sell 6-session packages then lose track of balances and no-shows; this tracks redemptions, expiry, and nudges clients to book remaining visits.

  B2B 1 week

• Mini session booking for photographers

  Photographers sell 15-minute mini sessions in DMs and double-book slots; a booking page built for slot blocks, deposits, and waitlists.

  SaaS weekend

• Funeral program and slideshow builder

  Grieving families wrestle with Word templates for funeral programs at the worst possible time; build a printable program and slideshow fast.

  Consumer weekend

• Enrollment and tuition for microschools

  Microschools cobble tuition onto Venmo and paper forms; applications, enrollment agreements, tuition autopay, and sibling discounts in one system.

  SaaS 1 month

• Schedule and cost ledger for nanny shares

  Nanny-share families reconcile hours, sick days, and cost splits over text; a shared schedule and monthly ledger both households can trust.

  Consumer 1 week

• Assignment and practice portal for music teachers

  Music teachers lose students when parents can't see progress; weekly assignments and practice logs parents actually get emailed.

  SaaS 1 week

• Makeup lesson credits for music studios

  Music teachers drown in makeup-lesson IOUs tracked in notebooks; this issues credits on cancellation and lets parents self-book open makeup slots.

  Micro-SaaS 1 week

• Sponsor slot management for newsletter operators

  Newsletter writers track sponsor bookings, creative deadlines, and invoices across spreadsheets and email; this manages slots, assets, and billing.

  Micro-SaaS 1 week

• Job and fee tracker for signing agents

  Loan signing agents juggle jobs from five signing services and wait months to get paid; one board tracking jobs, fees owed, and aging invoices.

  SaaS weekend

• Live availability lists for wholesale nurseries

  Wholesale plant nurseries email PDF availability lists weekly; a live availability page landscapers can order from, synced from a spreadsheet.

  SaaS 1 week

• Tester coordination for knitting pattern designers

  Knit and crochet designers wrangle pattern testers through Instagram DMs and missed deadlines; run applications, check-ins, and photo collection.

  Micro-SaaS weekend

• Daily canary tests for OAuth sign-in

  Google or Slack quietly breaks your OAuth and signups die; headless logins run daily against your app and page you before users notice.

  Dev tool 1 month

• Photo inspections that sell auto repair work

  Independent auto shops struggle to get approval for needed repairs; this sends customers a photo inspection report with tap-to-approve line items.

  B2B 1 month

• Breaking change alerts for third-party APIs

  Third-party APIs break your integration without warning; this watches their OpenAPI specs and alerts you before deprecated fields hit prod.

  Dev tool 1 week

• Round robin ladders for pickleball groups

  Pickleball organizers run ladders on whiteboards and reply-all email; auto-generated round robins, live standings, and next-week matchups.

  Consumer 1 week

• One-link guest intake for podcasters

  Podcast hosts chase guests for bios, headshots, and consent across endless email threads; one intake link collects everything, filed per episode.

  Micro-SaaS weekend

• Potluck signup that balances the menu

  Every potluck ends up with five desserts and no mains; a signup link that balances dish categories and surfaces dietary needs up front.

  Consumer weekend

• Chemical logs and visit reports for pool techs

  Pool techs scribble chemical readings on door hangers; log readings in seconds, get dosing math, and send customers proof-of-service each visit.

  Micro-SaaS 1 week

• Dangerous migration linter as a GitHub app

  A single ALTER TABLE can lock production for minutes; this GitHub app flags dangerous Postgres migrations in the PR before they merge.

  Dev tool weekend

• Before and after screenshots on every PR

  Reviewers can't see UI changes in a diff; this shoots before/after screenshots of changed pages on every PR via your preview deploys.

  Dev tool 1 month

• Instant quote widget for pressure washers

  Pressure washers lose jobs to whoever quotes first; an instant ballpark quote widget that prices driveways and siding and captures the lead.

  SaaS weekend

• Job queue and costing for 3D print farms

  Etsy 3D-print sellers juggle which printer runs what and guess at filament costs; queue jobs across printers and price parts from weight and time.

  Micro-SaaS 1 week

• Proof approval portal for sign and print shops

  Sign shops chase artwork approvals through email chains and eat the cost of printing unapproved errors; this tracks proofs, versions, and sign-offs.

  B2B 1 week

• Anonymized production clones for staging

  Staging needs prod-shaped data but not real PII; nightly clones your Postgres with names, emails and cards scrubbed but relations intact.

  Dev tool 1 month

• Turn handwritten recipe cards into a book

  Grandma's handwritten recipe cards are fading in a shoebox; photograph them, get clean transcriptions alongside the originals, and print a book.

  Consumer 1 month

• Reconditioning pipeline board for used car dealers

  Independent dealers lose track of cars stuck at detail or mechanic shops; this tracks each vehicle's recon steps and days-to-frontline cost.

  B2B 1 week

• Referee assigning and pay for youth leagues

  Youth leagues assign referees by group text and pay them late; availability, game assignments, self-claim for open games, and per-game pay tracking.

  SaaS 1 month

• Local setup checker for onboarding developers

  New hires lose day one to broken local setups; a checker CLI verifies versions, env vars and services against your repo's manifest.

  Dev tool 1 week

• Sourcing cost tracking for online resellers

  eBay and Poshmark resellers cannot tie thrift-haul receipts to items at tax time; log hauls, split costs across items, get per-item COGS and profit.

  Micro-SaaS 1 week

• Leg and van planner for relay races

  Relay captains build 36-leg schedules in fragile spreadsheets; enter runner paces and get van schedules, exchange ETAs, and sleep windows.

  Consumer weekend

• Turnover pipeline for small landlords

  Small landlords wing every tenant turnover and lose weeks of rent; a checklist pipeline from notice to move-in with vendor scheduling texts.

  SaaS 1 week

• Gauge alerts for whitewater paddlers

  Paddlers refresh USGS gauge pages hoping their run comes in; set a runnable range per river and get a text the moment levels hit the window.

  Consumer weekend

• Schengen 90 in 180 day tracker

  Digital nomads risk overstays doing 90/180 Schengen math on napkins; log trips once and see exactly how many days remain, with exit alerts.

  Consumer weekend

• Booth rent autopay for salon owners

  Salon owners chase booth renters for cash every week; automated weekly ACH rent collection with late fees and a clean ledger per stylist.

  SaaS weekend

• Long-cycle service reminders for septic companies

  Septic tanks need pumping every 3-5 years, far past any CRM's memory; multi-year reminder sequences bring old customers back automatically.

  Micro-SaaS weekend

• Break alerts for web scraper selectors

  Scrapers die silently when a target site redesigns; this pings your selectors on a schedule and alerts with the new DOM diff.

  Dev tool 1 week

• Repeat job reminders for septic pumpers

  Septic pumpers lose repeat jobs when 3-year reminders live in a spreadsheet; auto-send texts and rebooking links when tanks come due.

  SaaS weekend

• Real-world API usage stats for library maintainers

  Library maintainers guess which APIs are safe to break; this scans public GitHub usage of your package and shows real call-site counts.

  Dev tool 1 week

• Sermon recordings into social clips for churches

  Churches sit on hours of sermon video nobody repurposes; upload a service and get captioned vertical clips of the strongest moments, ready to post.

  Micro-SaaS 1 month

• SMS shift confirmations for staffing agencies

  Staffing agencies eat no-shows that torch client trust; this texts placed workers before shifts and escalates non-confirmations so gaps get filled.

  B2B 1 week

• Cut layout optimizer for hobby woodworkers

  Hobby woodworkers waste expensive sheet goods on bad layouts; paste a cut list and get an optimized cutting diagram for plywood and boards.

  Consumer 1 month

• Storm dispatch for snow plow contractors

  Plow contractors dispatch by frantic 3am phone calls; activate a storm, push route lists to trucks, and bill per push with time-stamped proof.

  SaaS 1 month

• Shared care log for adult siblings

  Adult siblings coordinating a parent's care lose updates in group texts; a shared log for meds, appointments, doctor notes, and who is on duty.

  Consumer 1 week

• Operations software for sober living homes

  Sober living operators track drug tests, bed fees, and house rules on paper; one system for resident logs, test records, rent, and state audit exports.

  B2B 1 month

• Brand deal deliverable tracking for creators

  Creators miss brand-deal deliverables buried in email threads; track every sponsorship's deliverables, deadlines, usage rights, and payments.

  SaaS 1 week

• Pesticide application records for small farms

  Small farms must keep legally compliant pesticide application records but scribble them in truck cabs; log a spray in 30 seconds, keep it forever.

  Micro-SaaS 1 week

• Standing order manager for wholesale bakeries

  Wholesale bakeries take cafe standing orders by text and bake from memory; this manages recurring orders, daily production counts, and pack lists.

  B2B 1 week

• Skill progress tracking for swim schools

  Swim schools track skill levels on paper and parents churn between sessions; instructor skill checkoffs that trigger level-up emails and re-enrollment.

  SaaS 1 month

• Row level security test suite for Supabase

  One bad RLS policy leaks every user's data; write assertion suites that hammer your Supabase policies as real users on every deploy.

  Dev tool 1 week

• Automated aftercare texts for tattoo studios

  Tattoo clients toss paper aftercare sheets and panic-DM their artist; timed aftercare texts with heal-check photo prompts handle it automatically.

  Micro-SaaS 1 week

• Duty rosters for youth sports team parents

  Team parents wrangle snack, carpool, and jersey duty in group texts; rotating duty rosters with SMS reminders and one-tap swaps.

  SaaS weekend

• Consent forms and aftercare texts for tattoo studios

  Tattoo studios shuffle paper consent forms and repeat aftercare advice; this does e-sign intake with ID capture and scheduled aftercare check-ins.

  B2B weekend

• Test clock scenarios for Stripe billing logic

  Proration and trial edge cases only blow up in prod; scripted Stripe test-clock scenarios run your billing logic through a year in minutes.

  Dev tool 1 month

• Flash design storefronts for tattoo artists

  Tattoo artists sell flash designs and collect booking deposits through DMs and spreadsheets; a storefront built for flash drops, deposits, and booking.

  Micro-SaaS 1 week

• Fill cancelled therapy slots from the waitlist

  Private-practice therapists eat $100+ per late cancellation; this texts the waitlist in priority order and books the first yes into the open slot.

  Micro-SaaS 1 week

• TODO comments with owners, age and SLAs

  TODO comments are where intentions go to die; this indexes them with git blame age and owners, and nags Slack when they hit an SLA.

  Dev tool weekend

• Waitlist management for private practice therapists

  Private-practice therapists keep waitlists in a messy inbox; manage them by insurance, hours, and fit, with auto check-ins that keep the list warm.

  SaaS 1 week

• Tip pooling calculator with labor law rules

  Restaurant managers split tips in error-prone spreadsheets and risk wage lawsuits; this computes pools by hours and role with state-rule guardrails.

  B2B weekend

• Trail camera photo organizer for deer hunters

  Deer hunters drown in thousands of trail cam photos each fall; auto-sort by camera and time, tag bucks, and see movement patterns by stand.

  Consumer 1 month

• Restock planning for vending machine operators

  Vending operators guess what each machine needs; per-machine par levels turn into restock pick lists by route, with cash counts per stop.

  SaaS 1 week

• Prepaid hour tracking for tutors

  Tutors sell 10-hour packages and track balances in their heads; auto-decrement hours per session and email parents a top-up link when low.

  SaaS weekend

• Prepaid session pack tracking for personal trainers

  Independent trainers lose money losing count of prepaid session packs; this decrements on check-in and auto-invoices when a pack runs dry.

  Micro-SaaS 1 week

• Impound lot and lien deadline tracker for towing companies

  Towing companies lose lien sale rights by missing statutory notice deadlines; this tracks each impounded vehicle's clock and generates notices.

  B2B 1 week

• Collection value tracker for vinyl heads

  Record collectors have no idea what their shelves are worth; sync a Discogs collection and track value, insurance totals, and price movements.

  Consumer weekend

• Controlled substance log for vet clinics

  Vet clinics keep DEA-required ketamine and opioid logs in paper binders; this is a digital log with running balances and discrepancy alerts.

  B2B 1 week

• Gift log and thank-you note tracker

  Couples lose track of who gave what across showers and the wedding; log gifts as they arrive and check off notes so nobody is missed or double-thanked.

  Consumer weekend

• Security scanner for AI-generated apps

  AI-generated apps ship with exposed keys and missing auth; paste a repo or URL and get a ranked security report with copy-paste fixes.

  Dev tool 1 week

• Coach compliance tracker for youth sports clubs

  Youth sports club admins track coach background checks and SafeSport certs in spreadsheets; this tracks expirations and blocks non-compliant rosters.

  B2B weekend

• Outage status page for small wireless ISPs

  Rural WISPs get buried in support calls during outages; this is a status page plus SMS blast tool scoped to affected towers and subscriber areas.

  B2B weekend

• Round management for window cleaners

  Window cleaners run 4- and 8-week rounds from a notebook; plan rounds by street, log jobs done, and collect by direct debit automatically.

  SaaS 1 week

• Sales attribution for creators selling digital products

  Creators selling courses can't tell which platform actually drives sales; link tracking plus Stripe and Gumroad webhooks show revenue per channel and post.

  Micro-SaaS 1 week

• Competitor monitoring for small DTC brands

  Small DTC brands find out about competitor price cuts from customers; daily monitoring of rival prices, restocks, launches, and ad copy changes.

  Micro-SaaS 1 week

• PII redaction proxy for LLM API calls

  Teams in healthcare and legal can't send raw client text to LLM APIs; a drop-in proxy strips PII before the call and restores it in the response.

  Dev tool 1 month

• AI missed-call textback for service pros

  Home service pros lose jobs every time a call rings out; an AI texts back missed calls instantly, qualifies the job, and books the estimate.

  Micro-SaaS 1 month

• Guest booking pipeline for podcast pitching

  Guest booking means scraping podcast lists and cold emails in spreadsheets; find shows by niche, personalize pitches, and track bookings in one pipeline.

  Micro-SaaS 1 month

• Social scheduler built for real estate listings

  Agents rebuild the same listing posts for every platform by hand; paste an MLS link and get a scheduled week of listing, open house, and sold posts.

  Micro-SaaS 1 month

• Realistic take-home practice for data candidates

  Data candidates bomb take-homes they never got to practice; realistic warehouse datasets with timed SQL and dbt challenges and automated feedback.

  Consumer 1 month

• Print-on-demand spirit wear stores for teams

  Team parents run spirit wear orders through paper forms and Venmo; print-on-demand team stores with size tracking and automatic fundraiser payouts.

  Micro-SaaS 1 month

• UGC ad scripts for TikTok Shop sellers

  TikTok Shop sellers burn cash testing ad creative blind; paste a product link and get hook-tested UGC scripts, shot lists, and caption variants.

  Micro-SaaS weekend

• Tax ID validation API for SaaS billing

  SaaS billing teams hand-check EU VAT and UK company numbers at signup; one API validates tax IDs, applies reverse-charge logic, and logs proof.

  Dev tool 1 week

• QR menu with actual analytics for restaurants

  QR menus are everywhere but tell owners nothing. Show restaurants which dishes get viewed, hovered, and ignored — data they've never had.

  B2B 1 week

• Review-mining tool for Airbnb hosts

  Paste a listing URL, get every complaint and compliment from reviews clustered into a fix-it list. Hosts obsess over ratings; give them the why.

  Micro-SaaS weekend

• Waitlist sniper for gym classes

  Popular gym and studio classes book out in minutes. Watch for cancellations and alert (or auto-book) the moment a spot opens.

  Consumer 1 week

• Exit-interview widget for SaaS churn

  A drop-in cancellation flow that asks one smart question, offers the right save (pause, discount, downgrade), and tells founders why people actually leave.

  B2B 1 week

• Disposable photo wall for weddings

  A QR code on every table; guests' photos appear on a live wall and the couple gets everything in one album. No app installs, event-priced.

  Consumer 1 week

• Changelog writer that reads your merged PRs

  Connect a repo, get a user-facing changelog drafted from merged pull requests every week. Devs hate writing changelogs; users notice when they stop.

  Dev tool weekend