Oasis

What they built

Oasis tells you whether popular bottled and filtered water brands contain harmful contaminants, then recommends healthier options. You search a brand, you get a rating, you get an alternative. It is a simple consumer health app with a clear hook, and it monetizes two ways: a subscription for the full ratings, plus affiliate revenue from the water filters and products it recommends inside the app. Cormac Hayden (@cormachayden_) built and runs it solo.

How they did it

Hayden is not a computer science graduate or a traditional engineer. He taught himself to build the app using modern AI-powered coding tools, which is exactly the path VibeCoderHQ readers are on. The harder part was distribution, and he cracked it with relentless short-form video. He posted one to two TikTok and Instagram Reels a day, each analyzing a popular water brand and mentioning the app. For months nothing happened. Then five months in, a video went viral, and his account became one of the fastest to reach 100,000 organic followers, hitting that mark in 232 posts with 30 million views.

The numbers

• About $23K a month across web and app, reached in under seven months from the May launch. source
• 30 million views across 232 short-form videos, and the first account to reach 100K organic followers that fast.
• Built by a self-taught founder using AI coding tools, monetized with a subscription plus affiliate links.

Oasis is a clean template for a vibe-coded consumer app: pick a fear people already have, build the app with AI tools, and pour your energy into daily short-form video until one lands.