Move to another device

1. On the old device, open Settings → Backup → Export a backup copy.
2. Save to a destination accessible on the new device or transfer the complete file.
3. On the new device, open Revisync and use Settings → Backup → Restore full backup.
4. Read the warning: current data on the new device will be replaced. Select the backup and wait.
5. Check catalogue, calendar, time and settings before removing the old app.

There is no continuous sync. If you keep studying on the old device after exporting, make another copy to transfer those changes. Keep the original until migration is confirmed.