A No-Code Student Built a Peptide Tracker in 2 Weeks and Hit $125K in 80 Days
A 22-year-old business major spotted the exploding ‘peptides’ niche on TikTok, vibe-coded an app in two weeks, lit it up with influencer marketing, and hit $125K total in 80 days.
The pain point, and how they found it
It started with a roommate saying ‘let’s take peptides,’ then peptide videos flooding his TikTok feed. He found a booming trend where users tracked doses and side effects in spreadsheets and messy notes. ‘This is huge, yet there’s no proper tracker’ — that gap was the opening.
Cedric Roberge was a non-coding business major. His first app, a student marketplace called UniYard, got 800 users but zero revenue. After repeated failures, he nearly gave up.
The turning point was niche discovery. Spotting the fast-growing peptide space, he tried every competitor on the App Store and read all their reviews. He fed the collected reviews to Claude and asked it to ‘design the ideal peptide app from these.’ That’s the AI-era way to build.
The MVP had just three features: add a peptide, set a reminder, log a dose. True to his line — ‘your MVP should be a little embarrassingly simple’ — he shipped in two weeks. The biggest wall was Apple review (a medical topic), which he cleared by studying how existing GLP-1 trackers worded their disclaimers.
The repeatable playbook
- 1Sniff out a fast-growing niche from social trends (peptides)
- 2Try every competitor on the App Store and read all their reviews
- 3Feed the reviews to AI and have it design the ‘ideal app’
- 4Ship an MVP with just 3 features — ‘embarrassingly simple’ — in two weeks
- 5In strict-review categories, study and mimic how approved peers word things
- 6Hit influencers with sheer volume (100 DMs/day) to create initial momentum
His first app UniYard earned $1 despite 800 users, and several others flopped. This win came after a stretch where he nearly quit.
Deep dive (Premium)
Why it worked and the numbers behind it are for premium members.
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