Your data stays yours.
The short version: there is no account, no analytics, and no third-party code in either app. Your data lives on your devices and in your private iCloud database. We never see it.
The apps
Storage
Stadig Lift and Stadig Macro each keep their records in a local database on your device, synced to your own iCloud account through CloudKit when you are signed in. Apple's terms cover that storage. Backups you export are files you own.
Between the apps
The apps share a small amount of data on your device (your profile, life modes, the calendar and each app's summary, scores included) through an App Group container. It never leaves your devices except through your own iCloud.
Health
With your permission, the apps read and write Apple Health (weight, sleep, heart rate, steps, workouts and the rest). Health data is used only inside the apps and is never sent anywhere.
Models
Stadig Macro reads meal photos, label scans and descriptions with Apple's on-device model. If you turn on Private Cloud Compute, Apple processes those requests on its servers under Apple's privacy guarantees and does not retain them. No Stadig server and no third-party AI service is involved. Progress photos in Stadig Lift are never analysed by any model.
Nothing to buy
Both apps are free. There are no purchases, no ads and no ad networks, so there is nothing to track you for.
Catalogs
The food and supplement catalogs are built from public sources (USDA, Open Food Facts and the NIH Dietary Supplement Label Database) and ship inside the apps. Searching them is local.
This website
Static files
No cookies, no analytics scripts, no trackers. The hosting provider may keep standard server logs for security.
The support form
The one thing here that sends anything. What you write on the support page, and your email if you give one, is filed as an issue in a private GitHub repository that only Sam Svindland reads, so GitHub stores it. Your email is used only to reply to you. Ask and the issue is deleted.
Contact
Questions about your data: hello@stadig.dev.