There's a specific kind of frustration that comes from using a health app that feels like it was built by engineers who've never actually used it.
The timer shows a number. The number counts down. You earn a badge. That's it.
No context about what's happening inside your body. No sense of progression. No genuine reason to keep going beyond the guilt of breaking a streak. Just a countdown and a badge that means nothing by noon.
That frustration is what made me build LifeFast — a fasting tracker that treats users like intelligent adults who deserve to understand their own biology.
This is the story of how I built it. The technical decisions, the real challenges, the things I got completely wrong, and what I'd do differently. If you're building a health app, a mobile product, or just a solo-founder side project trying to become something real — I hope this saves you some time.
