33 of 406 ideas

A solo-built real-time bus/train tracker covering 160+ cities, downloaded 5.2M times, grown to $30K/mo in subscriptions on free App Store keyword optimization (ASO) alone.

Stephen has shipped hit app after hit app, and he's publishing his four-step idea-validation framework. Posted is doing $90K/mo right now; his last one, PuffCount, hit $44K/mo before he sold it. The core of the method: marketing is 90% of the outcome.

George can't code, so he used the no-code platform Rork to build an AI wrestling coach: upload your match video, the AI tells you what you did right and wrong, then hands you targeted drills. $10/mo, $38K actually collected in a single month (~$20K MRR). The core play: take “AI combat coach” and cut it down to the ultra-vertical wrestling niche, then snowball acquisition through a matrix of wrestling influencers.

Get the waitlist page, analytics, feedback board, email sequence, store listing, and landing page all in place before launch, and soak up every drop of Apple's new-app traffic boost

A 2020 pixel-shooter mobile game that earned $119K over five years by porting to every platform

Photograph a stamp, get an AI valuation plus its history — an ultra-narrow identifier app that siphons traffic straight from App Store search

Turn Bible GPT from a Q&A tool into emotional companionship that asks you questions back, aimed at the audience technology reaches last

A wrapper around an AI music generator that grows itself on one mechanic: share the song, not the app

Upload a screenshot of your chat with someone and AI tags their personality traits and red flags — built-in talkability and built-in urge to share

Turn an audience that buys one-off PDFs into one that pays every month: clone a top subscription app's core features with Base44, bolt on a landing page + paywall + Stripe, and start selling.

A first-time solo dev's brick-breaker with a Diablo-style loot twist cleared roughly £11K in its first 30 days — almost entirely from one Reddit post and organic installs.

A solo dev built a digital wardrobe app for his wife; it made $8,354 in 2025 while his two other apps made $472 combined — the honest arithmetic of shipping small apps.

Under 5,000 downloads produced $65,000 — because the app wasn't a workout app, it was one specific influencer's workout app, sold to the audience that already pays her.

A 19-year-old who can't code buys sports creators at a $2-5 CPM and turns them into subscription apps — two new apps hit roughly $23K and $15K in their first 45 days on $400/day of promo spend.

A paid translation app competing head-on with free Google Translate — and clearing $50K a month by being better at the parts Google stopped caring about.

A yoga sequencing app for teachers that collected $117K on its first day by selling lifetime deals before the product was finished.

A day counter with motivational reminders reportedly pulled $200K in a single month — and the whole feature set gets rebuilt on camera from a phone, no code written

A subscription symptom-tracking app for a 7-year health transition that most women go into unprepared, in a category where the incumbent reportedly clears $10M a month

A sub-niche of the accounting category where several apps do one thing — photograph a receipt — and the App Store estimates put three of them at $60K, $60K and $80K a month.

A former personal trainer built a calorie tracker you talk to, posted two TikToks a day for a few weeks, and hit $1,000 MRR with no ads, no ASO, and no launch.

A non-developer prompted ChatGPT chunk by chunk into a cross-platform meeting transcriber and reportedly took it to around $7 million in revenue, entirely solo, on rented infrastructure.

An AI photo studio built on the premise that you can have photography without a camera — and a single influencer post that tripled monthly revenue and never gave the gain back