A few months back I started experimenting with LLMs as a way to estimate calories/macros and give useful feedback. The results were good enough that I felt like something was there. I wanted to shed a few pounds so I built out a web app for myself. A few friends tried it and everyone said "this needs to be a native app".
So I converted the Rails app to just be an API backend and built an iOS app in SwiftUI. It just got approved in the (US) app store last week.
https://apps.apple.com/us/app/fatgpt-ai-weight-loss-coach/id...
Feature-wise it's pretty simple compared to MFP or Noom. But I've been logging my food every day for a while now and am down 12 pounds.
It's been really fun to build and I'm trying to release a new version every week.
Happy to hear any feedback or answer questions.
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