The front page

Ideas worth building, with the plan already written.

100 businesses taken from public complaints. Free ideas and market data. Paid plans and growth playbooks. Every idea, its evidence, and its market estimate are free to read; one credit unlocks that idea’s business-plan prompt and growth playbook together.

Hottest this issue

The hot list →

The full index

All 100 on one page →
No.BusinessNicheHot
  1. No. 066 Spoofing Monitor for Parked and Defensive DomainsDMARC/SPF monitoring and one-click hardening for your whole portfolio of abandoned domains. Cybersecurity 4.25
  2. No. 001 Prescription Stock Finder for ADHD MedsFind which nearby pharmacy actually has your stimulant prescription in stock, without calling ten stores. ADHD & Focus 4.15
  3. No. 078 AI Clonability Audit for SaaS ProductsScore which of your features an AI agent could clone in a weekend, and where your real moats are. SaaS & Founder Tools 4.15
  4. No. 013 Dementia Conversation Cue CardsRecord a calm answer once for each repeated question, and get the right script instantly on your phone or speaker. Caregiving & Aging Parents 4.05
  5. No. 026 Work History Verification for Closed EmployersVerify past jobs at companies that no longer exist using W-2s and indirect records, with a certificate HR systems accept. Careers & Hiring 4.00
  6. No. 055 Watch-Together Layer for Self-Hosted Media ServersSynced watching that works on top of Plex, Jellyfin or Emby and doesn't depend on any one vendor. Self-Hosted 4.00
  7. No. 087 EU Packaging Law (PPWR) Compliance for Small ExportersTurn PPWR requirements into concrete packaging and paperwork steps for international shipping. Small Business Operations 3.95
  8. No. 094 Medical Bill Dispute for Services You Never Consented ToReady legal wording, by state, to fight bills for ambulances and consults someone else ordered. Personal Finance & Consumer Rights 3.95
  9. No. 096 Earned Wage Access Fee AuditorCompare payslips with what EWA apps actually deposit and reveal the true effective fee. Personal Finance & Consumer Rights 3.95
  10. No. 022 Teacher-Controlled Blocklist for Viral Game SitesTeachers switch on a community-updated blocklist per class, without waiting on district IT. Education & Teachers 3.85
  11. No. 090 Commingled Expense Detector for BookkeepersFlag personal-vs-business mixing in client bank feeds and request receipts before month-end close. Accounting & Bookkeeping 3.85
  12. No. 019 Locked Assignment Windows Inside the LMSVerifiable in-class 'closed windows' for assignments, built into Canvas, instead of hacky access codes. Education & Teachers 3.75
  13. No. 050 Time-Machine Version History for ObsidianGit-powered snapshots with a visual diff and one-click restore, for users who don't know git. Productivity & Notes 3.75
  14. No. 010 Hospital Observation-Status WatchdogAlert families the moment a parent is billed as 'observation' instead of 'inpatient', before Medicare coverage is lost. Caregiving & Aging Parents 3.70
  15. No. 024 Evidence Vault for Teacher Employment DisputesTimestamped incident logging plus templates to formally contest a reprimand under union rules. Education & Teachers 3.70
  16. No. 027 Lowball Offer Detector for Job PostingsA browser extension that saves the posted salary range when you apply and flags offers below it. Careers & Hiring 3.70
  17. No. 036 Insurance Claim Concierge for Digital NomadsHand off your stuck travel-insurance claim; we assemble documents per insurer and escalate. Digital Nomads & Travel 3.70
  18. No. 038 Tax Residency Risk Checker for NomadsCheck your real travel route and income structure against each country's rules before you're accidentally tax resident. Digital Nomads & Travel 3.70
  19. No. 093 Fraud Dispute Accelerator for Banks and RetailersGenerate disputes for the bank, credit bureaus and retailer at once, track legal deadlines and escalate to the CFPB. Personal Finance & Consumer Rights 3.70
  20. No. 099 Shelf vs Register Price Mismatch ScannerSnap the receipt and shelf tag; the app spots overcharges and helps file a consumer-protection complaint. Personal Finance & Consumer Rights 3.70
  21. No. 041 Proposal Tool That Protects Your IdeasShow the full value of a proposal but gate implementation details behind a paid discovery phase, with view tracking. Freelancing & Clients 3.65
  22. No. 067 SSH and SSL Certificate Lifecycle Manager for Small ITAuto-rotation and one dashboard for certs and keys across mixed Linux and Windows fleets. IT, Sysadmin & MSP 3.65
  23. No. 077 QA Review for AI-Translated WebsitesCatch meaning, cultural and layout errors in AI-localized sites before launch, the bugs normal QA misses. Web Development 3.65
  24. No. 082 Paid 'Pick Your Brain' Scheduler for ExpertsTurn free coffee-chat requests into paid 15-minute slots, with polite decline templates. SaaS & Founder Tools 3.65
Showing 24 of 100

The letter

Five new businesses when a report lands. No account. Unsubscribe by replying.

Want it built?

Real Startup Ideas carries the agent-ready software PRD for every idea here, and can build it for you.

Visit Real Startup Ideas →