How do I delete my data and start fresh?

You can delete all completed fasts together. Weight records and an ongoing fast have separate controls. These deletion controls do not require Pro.

If you want to keep a copy of your records, export them before deleting them. Fasts and weights are separate exports.

Delete all completed fasts

Open Statistics → Data (tray icon, top-left corner) → Fasting.
If a filter is active, tap its control in the bottom toolbar to remove it and show your full history.
Tap Edit.
Tap Delete all in the toolbar.
Review the confirmation, then tap Delete all fasts to remove the records.

The confirmation says this cannot be undone. An export you kept can be imported again.

With a filter active, Delete all removes only the matching fasts. Keep a filter if you want to clear just that part of your history; remove it to clear everything. The confirmation describes which set will be deleted.

Discard an ongoing fast

Deleting completed records does not stop the active timer. To discard it, open the main timer, tap End Fast or Complete Fast, then Delete in the finish screen. See timer controls.

Remove weight records

Open Statistics → Data (tray icon, top-left corner) → Weight. Swipe left on a Fasty weight record and delete it. Repeat for the records you want to remove. There is no Delete all control for weights in this version.

Records from other Apple Health sources cannot be deleted from this Fasty list. Manage those measurements in Health. If you only want to stop showing Health weights in Fasty, turn off Apple Health Sync in Statistics → Settings → Statistics → Weight logging. This leaves the measurements in Health.

When Health sync and write access are enabled, deleting a Fasty weight record also attempts to remove its matching Fasty-created Health measurement. Check Health if you want to confirm it was removed. See Health access.

Records and settings are separate

Clearing records leaves your goal, appearance, reminders and other preferences in place. Change those in Settings as needed for your fresh start. It does not cancel a subscription; use purchase management for that.

If records remain or deletion shows an error, please contact me with the screen, any active filter, the error message and your Fasty/iOS versions.