Mobile app
Pep AI
App for tracking peptide use safely, with dosing logs and education.
Visit Pep AIRevenue (self-reported)
$33K in last 28 days; $11K MRR; $51K total in 7 weeks
last-28-days revenue; MRR $11K; ~2,000 active subscriptions
How it started
Cedric Roberge, a college student who built his first app in October, spotted peptides as a fast-growing niche on social media and reviewed existing apps' reviews to build a better version. He vibe-coded it in about two weeks on Replit with Claude as his 'senior developer', then spent about a week getting past Apple rejections over medical-advice concerns. It hit 10,000 users and ~$50K total revenue within seven weeks of launch.
Tools they use
Replit
AI App Builders
Build applications with an AI agent and an online development workspace.
FreeFree tierVisit ReplitAnthropic
AI
API access to Claude models.
Usage-basedVisit AnthropicRevenueCat
Payments
In-app subscriptions and paywall infrastructure for mobile apps.
Pricing not listedVisit RevenueCat- Featured
Resend
Communication
Email API for developers.
Free tier · from $20/moFree tierVisit Resend Firebase
Authentication
Google's app development platform.
Free tier · usage-basedFree tierVisit Firebase
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Founders
- Cedric Roberge · Founder
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