Your Data Travels With You
When you reinstall, nothing's lost.
Most fitness apps treat your data as device-local. Lose your phone, switch to a new one, factory-reset for any reason, and your training history is gone. Ankh treats your data as yours. Workouts, sleep, body composition, and your profile all back up to the cloud automatically. Sign back in with Apple and your training history, health data, and profile come back.
Sign-in is through Apple, so there's no email or password to manage. Cloud backup is on by default. Health and wearable data backup can be turned off in Settings.