Prayer Lock: a Christian app that locks your phone until you pray, over 20K a month, coded in three days with Cursor
An iOS app that blocks the apps you choose until you recite a short AI-generated prayer matched to how you feel that day, sold as a weekly or yearly subscription.
over 20K a monthper month, closed December 2025 at 21,000 in sales; currency not stated, the video title says $20K/month, as claimed
- Verification
- Screenshot Founder shared a dashboard screenshot (Stripe, RevenueCat, App Store). Not independently verified.
- App type
- Productivity & lifestyle
- Currency
- Currency not stated
- Built with
- Cursor, ChatGPT, OpenAI Codex
- Got customers via
- UGC videos, TikTok, Instagram, TikTok ads, Meta ads
- Source
- Mau Baron (founder), Starter Story on Starter Story, Jan 19, 2026
“I built Prayer Lock back in June I literally just use cursor and chat GPT like that's it”
Editor's note: He calls himself not technical by background (he majored in finance) but taught himself to code after seeing OpenAI Codex in 2022, and built other apps for about three months before this one. He says he built Prayer Lock as an improved take on an existing app (PrayScreen). The auto-transcript also names a design tool rendered as 'Rourke' (possibly Rork; not confirmed). His X bio now says the app is bootstrapped to $100k/month (seen Oct 16, 2026; not part of this case).
How they got customers
He tested many formats, posting around 40 times a day across 12 TikTok and Instagram accounts, until a UGC 'reaction' video with an app demo worked; his girlfriend (now wife) recorded them for free, which got him to his first 1K a month. A second creator followed, then paid ads: Meta first, then broad TikTok Spark-style campaigns on his best organic videos, after lengthening the onboarding from five to 15 minutes improved conversion.
Steps to try
Look for niches where apps already make over 50K a month (he uses Sensor Tower estimates), then build a clearly better version of one.
From the sourceCode it in under two weeks, building the app feature by feature with AI instead of trying to one-shot it; he skipped accounts and a database and stores data on the device.
From the sourceStop touching the product and obsess over distribution: copy the formats that work in your niche and post at least 20 times a day.
From the sourceIterate on the onboarding until at least 10% of downloads start a trial, then put ad spend behind organic videos that passed 10K views (he prefers TikTok Spark Ads).
From the sourceStack named in the interview: Cursor (mostly with Sonnet), ChatGPT, Codex CLI, Superwall for paywalls, Singular for attribution, PostHog for analytics, AWS hosting and Gemini Flash for the in-app prayers.
From the source
"From the source" steps summarize the linked post.
Source
We summarize and link. Figures are reproduced as stated and are unaudited unless marked Verified. Founder? Request a correction or removal.
Quick answers
How much does Prayer Lock make?
Prayer Lock reports over 20K a month (per month, closed December 2025 at 21,000 in sales; currency not stated, the video title says $20K/month, as claimed). Source: Mau Baron (founder), Starter Story, Jan 19, 2026. Proof level: Screenshot. Founder shared a dashboard screenshot (Stripe, RevenueCat, App Store). Not independently verified.
What was Prayer Lock built with?
The source says it was built with Cursor, ChatGPT and OpenAI Codex.
How did Prayer Lock get customers?
Main growth channels: UGC videos, TikTok, Instagram, TikTok ads and Meta ads. He tested many formats, posting around 40 times a day across 12 TikTok and Instagram accounts, until a UGC 'reaction' video with an app demo worked; his girlfriend (now wife) recorded them for free, which got him to his first 1K a month. A second creator followed, then paid ads: Meta first, then broad TikTok Spark-style campaigns on his best organic videos, after lengthening the onboarding from five to 15 minutes improved conversion.