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COMMENT APPS

5 simple apps
making real money

Small mobile apps, built by one or two people, each one a single idea you can say in a sentence. Every number on this page was said in public by the builder, or verified by a payment provider, and the source link sits under each one so you can check it yourself.

$721,000+EARNED BY FOUR OF THEM
(the five totals that are published)
1 or 2PEOPLE BEHIND EACH APP
not one of them had a team

App icons, screenshots and star ratings on this page are pulled live from the Apple App Store, read 18 September 2026. Revenue figures are dated at each source.

01 / 05
Pushscroll app icon

Pushscroll

4.68 from 17,545 ratings · App Store

Do push-ups to unlock your apps. Your phone blocks Instagram and TikTok, the camera watches you do the reps, and the apps open when you finish.

$30KA MONTH
300,000DOWNLOADS
2 weeksTO THE FIRST VERSION
Pushscroll: replace doomscrolling with a healthy habit Pushscroll counting push-ups with the camera Pushscroll blocking Instagram
WhoTwo people. Alejandro does content and design, Mario writes the code.
Built withApple's app blocking, plus Google's free MediaPipe library to count the push-ups from the camera. Push-up detection is one of the standard examples in that library.
How it grewThey posted a fake demo video before the app existed to see if anyone wanted it. It worked, so they built it. About 40 million views across platforms before launch, zero ad spend.

$30K a month and 300,000 downloads: Starter Story, 16 January 2026, starterstory.com/Pushscroll. MVP in two weeks and the MediaPipe detail: Superwall, 21 October 2025, superwall.com.

Read this one carefully. One source calls the $30K monthly revenue, the other calls it monthly profit. That is why this page says "$30K a month" and nothing more precise. The founders later said they passed $1 million in total, but that figure comes from a republished thread rather than a first-hand post, so it is not on this page.

02 / 05
Brainrot app icon

Brainrot

4.54 from 21,988 ratings · App Store

A brain that visibly rots the more you scroll. You watch your own brain decay in real time, which turns out to be a much stronger feeling than a number telling you your screen time.

$26KIN THE FIRST 30 DAYS
$3,000ON DAY ONE
6APP STORE REJECTIONS
Brainrot: save your brain, stop scrolling Brainrot blocking social apps Brainrot rewards and customisation
WhoYoni Smolyar, on his own. He works as a staff software engineer at a large tech company and built this beside the job.
Built withSwift, written with Cursor and Claude Code. He says the app is "90%+ vibe coded". Superwall handles the paywall. It took 2.5 months to get from start to the store, including six rejections.
How it grewHe had already posted daily build-in-public videos for over 400 days and had an audience waiting. Launch day brought about $3,000, Product Hunt day about $5,000.

$26K in the first 30 days: Indie Hackers, 24 July 2025, indiehackers.com. The build details, the rejection count and the day-one figure: What a Startup, 22 July 2025, whatastartup.substack.com.

The honest part. The app is simple. The audience was not free. He spent more than a year posting every day before this launch, and that is the part that made the first month look like that.

03 / 05
HabitKit app icon

HabitKit

4.85 from 2,422 ratings · App Store

A habit tracker that looks like a GitHub contribution grid. Every habit is a wall of little coloured tiles, and filling them in is the whole point. The idea is the design.

$602,000TOTAL REVENUE
$28,000MRR
25,100PAYING SUBSCRIBERS
HabitKit: habit tracking with beautiful grids HabitKit grid view of several habits HabitKit habit customisation screen
WhoSebastian Roehl, working on his own. He publishes his revenue every year on his own newsletter, which is why these numbers are first-hand rather than someone's estimate.
Built withIt is one screen of tiles and a widget. He has posted the numbers for years; the framework is not stated in the sources used here, so this page does not guess it.
How it grewNo viral moment. He built in public on X, then the app started ranking in App Store search for "habit tracker" and kept climbing. 272,000 App Store downloads and 290,000 on Google Play.

All figures from his own year in review, 31 December 2025: sebastianroehl.substack.com. The $602,000 is written there as "Total Revenue".

04 / 05
Quran Unlock app icon

Quran Unlock

4.73 from 223 ratings · App Store, and 4.9 from 3,387 on Google Play

Read Quran to unlock your apps. It is the same lock as Pushscroll and Brainrot, pointed at a completely different reason to open your phone in the morning.

300,000USERS
$13,252EARNED SO FAR
10 monthsOLD
Quran Unlock: replace scrolling with the Qur'an Quran Unlock blocking apps until the daily reading is done Quran Unlock reading view
WhoBuilt by Yacine, in the UAE. Founded November 2025.
Built withReact Native and Swift on the front, Firebase and RevenueCat behind it. RevenueCat is also what verifies the revenue figure.
Why it is hereIt is the smallest earner on this page and it is still on it. 300,000 people use it and it has made $13,252 so far, which is a real lesson about who you build for and when you charge.

Revenue verified through a RevenueCat API key and read on 18 September 2026 at trustmrr.com/startup/quran-unlock. These numbers update live, so they may have moved since.

Do not read this one as a money story. $13,252 all time is about $654 a month. The interesting number here is 300,000 people using it inside ten months, on an idea nobody was serving.

05 / 05
Cat on Chair app icon

Cat on Chair

4.91 from 400 ratings · App Store

A focus timer with a cat sitting beside you. You start the timer, a hand-drawn cat appears on the chair and keeps you company until the session ends. That is the entire app.

$18,000+A MONTH
$80,000IN ABOUT NINE MONTHS
127,000DOWNLOADS
Cat on Chair: stay focused, your cat is on watch Cat on Chair focus timer with the cat on the chair Cat on Chair room scene during a focus session
WhoRyan Yao, a former product designer who left a $200,000 job. The cat illustrations are drawn by hand.
Built withAn AI coding tool, and RevenueCat for payments. It is free to download, then $19.99 a year or $29.99 once for life. Most of the money comes from people buying the lifetime option.
How it grewPosts on Instagram and RedNote. One of them crossed 2 million views. It reached number 3 in free productivity apps on the Taiwan App Store. No paid ads.

Figures from his Starter Story interview, published 26 July 2026, written up 29 July 2026 at startupfinder.co. The original video is here. The App Store lists the release date as 27 August 2025, which matches the launch date given in the interview.

What all five have in common

Put them next to each other and the same shape shows up every time.

1One sentenceEach one is an idea you can say in a single line
1One featureNo feeds, no dashboards. One screen, one job
2People, topsNot one of these had a team behind it

And three of the five are the exact same trick: lock the phone until you do something. The lock is identical. Only the reason changes, and the reason is what people actually pay for.

push-ups
a prayer
nothing

None of these needed a big team or a big codebase. Two of the five builders say outright that AI wrote most of the code. The code was never the hard part. The idea was.

one idea, one sentence one screen one or two people pick the audience first charge from day one

How every number here was checked

The rule for this page was simple: if a figure could not be traced to the builder saying it in public, or to a payment provider verifying it, it does not appear. No estimate sites, no guesses.

Founder statedPushscroll, Brainrot, HabitKit and Cat on Chair. The builder said the number in an interview, a newsletter or a post. Each source is linked in the section above.
Provider verifiedQuran Unlock. The revenue is read directly from a RevenueCat key, so it is not self-reported at all.
Left out on purposePushscroll's $1 million total, because the only source is a republished thread. Any figure from an app-estimate site, because those are guesses dressed as data.
Live from AppleEvery icon, screenshot and star rating on this page, pulled from the App Store on 18 September 2026.
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Who made this

Hi, I'm Rahman.

I've been building things people pay for since I was 10. Online game servers first, then $250K+ earned in tech. Now I build with AI in public, and every free thing from my reels lands on a page like this.

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