Top ideas: where the money is and what you can build
Every idea is scored on three axes from real data: money (who already pays and how much, from prices in reviews), buildability for a solo founder, and demand. The score is their weighted sum.
- 185Workout & fitness apps$10
A strength training log for serious lifters
Serious lifters (Hevy, 77K ratings, realScore 79) already pay for a workout log. A one-time $5-10 is less than a single gym visit.
Money80Simplicity88Demand91 - 284Baby tracking apps$5
Night-mode tracker with no bright screen
Every frustrated parent after a tracker redesign switches apps immediately. The nighttime scenario is the main trigger for changing apps, and a widget at $3.99 solves exactly that
Money76Simplicity88Demand93 - 384Baby tracking apps$5/мес
Sleep window predictor
Huckleberry charges $9.99 a month for its sleep predictor and keeps subscribers. A one-time $4.99-7.99 purchase for the same algorithm without a hidden paywall takes that slot instantly
Money80Simplicity83Demand93 - 484Study flashcards$60/год
Надёжное хранение деков: синхронизация и история версий
Med students (USMLE, NCLEX) already spend $200-500 on UWorld. $8/month to guarantee deck safety is insurance, not an expense. Conversion is high among users who have already lost data.
Money82Simplicity82Demand92 - 584Focus & productivity timer apps$7.99
Time tracker for freelancers
A freelancer billing hourly pays $7.99 once and saves hours on Harvest or Toggl. ATracker already proved the one-time purchase model for time tracking
Money80Simplicity85Demand89 - 683Baby tracking apps$5
Pumping and breast milk supply tracker
Moms exclusively pumping pay Pump Log $4.99 despite bugs and a broken timer. A paying, genuinely suffering customer already exists
Money80Simplicity82Demand93 - 782Calorie & nutrition trackers$9.99/мес
Macro tracker for strength athletes on RP and periodization protocols
Strength athletes pay $120/yr for MacroFactor even when it cuts calories without explanation. The same price is justified with a product that actually explains itself. Technically it is CRUD with a TDEE algorithm and phase planning.
Money86Simplicity68Demand98 - 882Baby tracking apps$5
Baby care diary for pediatric visits
Baby Tracker Pro is praised specifically for its reports, and Baby Connect and Huckleberry sell subscriptions partly for pediatric features. A one-time $5.99 purchase is clear and justified
Money74Simplicity85Demand93 - 982Baby tracking apps$5
Twins and triplets tracker
Parents of twins buy almost everything offered in the first months. A narrow but high-converting segment with no specialized solution in the App Store
Money78Simplicity80Demand93 - 1082Journaling & mood apps$14.99
A between-session journal for therapy clients
A therapy client paying 3,000-8,000 RUB per session will easily pay 699 RUB once for a tool that makes sessions more productive. EMoods and Moodnotes proved the model
Money78Simplicity82Demand90 - 1182Focus & productivity timer apps$5
Visual timer for kids and teachers
A teacher or parent of a child with ADHD easily pays $4.99 once. A physical Time Timer costs $30-40, so the digital version reads as an obvious bargain
Money75Simplicity88Demand89 - 1281Crypto & investing apps$50
Bitcoin DCA strategy planner for long-term savers
Bitcoin accumulators on River and Swan Bitcoin buy DCA blindly and pay from $29 for a personal plan with backtesting. A small audience that pays willingly
Money80Simplicity72Demand98
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