Cheiron keeps your data on your iPhone and Apple Watch. There are no accounts, no servers, no analytics and no advertising. The one thing that leaves your phone is any barcode you scan, which is sent to a public database to find nutrition facts.
Nothing. Cheiron does not collect personal information, usage data, device identifiers or location.
With your permission Cheiron reads your workouts, heart rate, resting heart rate, heart-rate variability, steps, sleep and weight to draw its pages, and writes the blood pressure, pulse and weight readings you enter. On Apple Watch it reads your heart rate during a strength workout and saves the workout to Health. What it reads stays on your phone, in a cache excluded from backups; Health data is never sent anywhere.
The foods, meals, workouts, supplements, phases and readings you enter are kept in a database on your iPhone, and a workout in progress on your Watch. This data:
You can export it at any time from More.
When you scan or type a barcode, Cheiron sends that number to Open Food Facts (openfoodfacts.org), a public food database, to fill in the food. Nothing else is sent with it but the app's name, version and the developer's contact address, which Open Food Facts asks every app to send, and, as with any internet request, your IP address. Their privacy policy governs their side.
Feedback, under More, opens your own Mail app with a draft you can read and change; nothing is sent unless you send it.
None besides Open Food Facts, above. No SDKs, analytics, advertising or tracking.
Cheiron collects no data from anyone.
Questions about privacy: dev@emmilco.com