A little help.

Tap + in Until, name your moment, choose a date and save. Tap a countdown to edit it. Use More options for notes, units, time zones and repeating events.

Check that Until has notification access in your device settings. Check your Focus and notification summary settings, then open the countdown and confirm its reminder schedule. Reminders are local notifications, not guaranteed alarms.

Open Settings and choose an import source. Allow access when prompted, then select the entries you want to import. You can revoke access later in your device settings. Until does not need these permissions for manually created countdowns.

Use Settings → Export Countdowns, then save the file to a location you control. On the other device, use Settings → Import Countdowns. Until does not currently provide automatic cloud sync. Keep your backup private because it includes countdown details and notes.

If purchases are available in your build, use Restore Purchases in the upgrade screen with the same store account. If a purchase does not appear, email the transaction reference and app version. Never send card details or your store password.

Open Settings → Delete All Data and confirm. This removes the countdowns and preferences held by Until on that device. Delete exported files or shared images separately wherever you saved them. Any backup managed by your device or cloud provider is controlled by that provider.