Rumblings logs what you eat, drink and pass, then looks for the patterns between them. The analysis runs on your phone. The photographs are never saved.
The Bristol stool scale
Every entry is one of these seven, plus colour and any warning signs. The scale is the app's unit of measurement — it is what makes a pattern findable at all.
How it works
Photograph an entry and an AI model characterises it — Bristol type, colour, warning signs. You confirm or correct before anything is stored. Or skip the camera entirely and enter it by hand.
Health Connect supplies nutrition and hydration, plus sleep, activity and cycle if you switch them on. Rumblings adds what it cannot represent: supplements, medications, symptoms and context.
A statistical engine on your phone tests associations, raises a flag when something warrants a doctor, and runs pre-registered single-subject experiments when you want to settle a suspicion properly.
Privacy
Most of this app exists to make one promise keepable: a photograph of your body is not a file. It is held in memory long enough to be described, then discarded.
Status
Rumblings is in active development and has not been released. This page describes what it does today, not a shipping product. The privacy policy covers the data it handles.
Rumblings is a journal, not a medical device. It reports associations in your own records and will tell you when something is worth raising with a doctor. It does not diagnose.