Mobile app

Locked

Gamified health and fitness app with characters, leaderboards, badges and levels to keep users on task.

Revenue (self-reported)

$14K/month

$40/year or $7/week pricing

How it started

Evan, a minor encouraged by his older brother Zach to get into apps, first built Problem Pal (peaked ~$2K/month, later sold) and Clear AI, which flopped. A friend's struggle to stay motivated sparked Locked, a gamified alternative to boring habit trackers. Designs took two weeks in Figma, then they built it in Xcode with Claude Code, going live in about 1.5 months; growth came solely from influencer partnerships priced below his RPM.