A solo founder coded a Christian prayer app with AI in three days and says it hit $21,000 in monthly sales
Prayer Lock blocks distracting apps until the user prays, and writes a personal prayer with AI.
Subject: Prayer Lock (Mau, @maubaron on X)Weekly and yearly subscriptions to a mobile app
Case Overview & Background
Prayer Lock locks chosen apps on the phone until the user prays. The founder says he coded the app with AI in three days. In the interview he says December closed at $21,000 in sales, up from about $15K the month before and $10K in October, with close to 58,000 downloads. The app charges $49.99 a year or $9.99 a week.
How AI Is Used
Step-by-Step Process
He built for Christian users who want to pray more and scroll less.
He says coding the app took three days.
He points to a strong onboarding flow and a high review rate.
The video covers growing organically first, then adding paid ads.
Customer Acquisition & Distribution
Limitations, Risks & Failure Modes
What may not apply to you, and what could go wrong:
- Self-reported figures with no records reviewed by an outlet
- Sales are gross, before Apple and Google fees
- Weekly subscriptions can bring refunds and churn
- Faith-based products need care to avoid seeming exploitative
Key Takeaways
- A simple habit tool with a clear audience can sell well
- AI can generate personal content inside an app, not only build it
- Onboarding and reviews can drive app store growth
Sources
Starter Story: I grew my mobile app to $20K/month: here's my entire playbook
Note: Video interview with transcript. The founder states the $21,000 December sales, $15K and $10K earlier months, pricing, and how AI is used.
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