I turned a viral idea into a $25K/month app

The gist

1. Ben says Canary has 50,000 downloads and 2,000 paying subscribers, charging $10 a month or $79 a year, with 60% choosing yearly.
2. He got the idea when followers using Duolingo could not speak French but remembered song lyrics, then tested it with a dedicated page.
3. That page was not about him personally and grew to 200,000 followers in under a year, which Ben treated as proof people wanted this.
4. Ben hired a developer, shipped a rough first version in about a month, and started vibe coding himself four months ago.
5. His growth playbook: post a lot on Instagram reels, boost organic winners with Meta ads, kill the losers, and launch before things feel perfect.