Pep AI: a peptide tracker app at 33K in 28 days and 11K MRR seven weeks after launch, vibe coded with Replit and Claude
An iPhone app that helps people track peptide and GLP-1 doses safely: vial inventory, dose scheduling with reminders, dosing history, an AI chat bot and a research library.
33,000 in revenue in the last 28 days, 11,000 MRR and 51,000 in total revenue about seven weeks after launchper month, RevenueCat dashboard shown in a Starter Story interview, May 2026, as claimed
- Verification
- Screenshot Founder shared a dashboard screenshot (Stripe, RevenueCat, App Store). Not independently verified.
- App type
- Health & fitness
- Currency
- US dollars (USD)
- Built with
- Replit, Claude
- Got customers via
- Influencers, Instagram, TikTok, Meta ads, TikTok Spark Ads, Reddit, Building in public
- Prior audience
- Not stated in the source
- Source
- Cedric Roberge (founder), Starter Story on Starter Story, May 28, 2026
“This is in the last 28 days We have 33 000 revenue almost 2 000 active subscriptions Our MRR is 11 000... I started on Repl it... I also had Claude as like my guide”
Editor's note: Cedric Roberge is a college student; his first app, a student marketplace for the University of Oregon, got about 800 users but made no money. He says he started Pep AI on Replit by explaining what he wanted, with Claude as 'my senior developer' for setting up RevenueCat and Resend, and that it took about two weeks to build, with Firebase as the backend. Apple rejected the app many times before approving it.
How they got customers
Influencer marketing first: creators in the peptide niche were signed before launch, and one creator's first post brought about 4,000 in revenue that day. On X he later wrote that over 100 creators post once or twice a week (paid by engagement plus a 15% affiliate cut), that the best videos are run as Meta ads and TikTok Spark Ads, and that his team sends over 1,000 outreach messages to creators a week.
Steps to try
Pick a niche that is trending right now (peptides) so demand and attention come for free.
From the sourceRead every review of the existing apps, note what people like, dislike and wish for, and hand that to Claude or ChatGPT to shape your app idea.
From the sourceGet niche influencers posting about the app before you launch, even before you write code.
From the sourceGive creators a personal affiliate code (15% of sales) so they post more than you asked.
From the sourceRun paid ads on the creator videos that already performed well.
From the sourceFor health-related apps, plan time for App Store review and rejections before launch day.
Our suggestion
"From the source" steps summarize the linked post. "Our suggestion" steps are general practice from us, not claims by the founder.
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 Pep AI make?
Pep AI reports 33,000 in revenue in the last 28 days, 11,000 MRR and 51,000 in total revenue about seven weeks after launch (per month, RevenueCat dashboard shown in a Starter Story interview, May 2026, as claimed). Source: Cedric Roberge (founder), Starter Story, May 28, 2026. Proof level: Screenshot. Founder shared a dashboard screenshot (Stripe, RevenueCat, App Store). Not independently verified.
What was Pep AI built with?
The source says it was built with Replit and Claude.
How did Pep AI get customers?
Main growth channels: Influencers, Instagram, TikTok, Meta ads, TikTok Spark Ads, Reddit and Building in public. Influencer marketing first: creators in the peptide niche were signed before launch, and one creator's first post brought about 4,000 in revenue that day. On X he later wrote that over 100 creators post once or twice a week (paid by engagement plus a 15% affiliate cut), that the best videos are run as Meta ads and TikTok Spark Ads, and that his team sends over 1,000 outreach messages to creators a week.