I started experimenting with LLMs and decided I wanted to create a fitness app. My first thought was an app that disabled Google Pay every time my phone detected I was within 50m of a McDonald's. However, I quickly pivoted like a true founder to create an app that addressed a personal issue of mine.

On Android, if you have a bunch of apps and fitness monitors from different manufacturers, very few of them all talk to each other. Your data is scattered across different apps or double counted. However, most data sources write to Health Connect.

Hamilton is a dashboard of your Health Connect data with a homepage that shows your key metrics at a glance. Your choice of data source is flexible to avoid double counting, and you can overlay and offset metrics on charts to view correlations and track progress over time.

I named the app after my dog, who occasionally fetches things and is responsible for my daily step count. Hamilton has no internet permission — it literally cannot connect to the internet. No analytics, no tracking, no cloud sync, no account.