How Josh Mohrer Vibe-Coded Wave AI to $7M ARR as a Solo Founder
TL;DR: Josh Mohrer built Wave AI after leaving Uber and a health-tech startup, leveraging ChatGPT to teach himself coding. The app records audio (in-person meetings, phone calls, voice memos), transcribes it, and provides AI summaries. Unlike competitors focused on meeting bots, 90% of Wave's volume comes from generic audio recording in physical spaces. Mohrer runs the entire operation solo - engineering, support, marketing - keeping roughly $3M of $7M revenue after app store fees and AI costs. He grew from $1M to $6M ARR in four months using Meta ads early on, but those stopped working as competition intensified. Now relies on Apple Search Ads, Google Ads, and organic discovery. The 4.9-star rating with 11K reviews on iOS drives strong organic installs.
Key Insights
- Non-engineer used AI tools (ChatGPT, Cursor, Claude Code) to build and maintain the entire product solo
- 90% of recording volume is generic audio in physical spaces, not meeting bots - a differentiated use case
- Meta ads drove explosive growth ($1M to $6M ARR in 4 months) but became ineffective as competition grew
- 10% install-to-paid conversion rate with 800-1000 installs per day
- Solo founder handles all support personally, using it as primary product feedback channel
- Uses best available AI models regardless of cost, prioritizing output quality over margins
Actionable Takeaways
- Focus on output quality first - use the best AI models available rather than optimizing for cost early
- Customer support as a solo founder is your best product research tool
- If paid ads work, ride them hard before competition catches up
- A 4.9-star app store rating with thousands of reviews creates a powerful organic growth flywheel
- Build for a use case competitors overlook - generic audio recording vs. meeting-specific tools