Petak.
Keep the book

Backup and restore

Your book is local first. iCloud key-value sync keeps it available across your devices, while Pro adds versioned iCloud Drive backups for recovery.

5 min read Updated 2026-08-14
WHERE THE BOOK LIVES Your device Your iCloud Versioned backups Restore Petak has no server copy of the book.
Sync and backup stay in your Apple account.

The everyday book

Petak stores the book in UserDefaults on the device and syncs it with NSUbiquitousKeyValueStore. Last writer wins for a book update, so let a device finish syncing before editing the same spot elsewhere.

Versioned backups

Pro writes versioned backups into your own iCloud Drive. Use them before a large change, after a device replacement or when you need to return the book to an earlier state.

Restore carefully

  1. 1Check

    Confirm the Apple account

    Make sure the device is signed into the iCloud account that owns the book or backup.

  2. 2Choose

    Pick the version

    Select the backup whose period and spot history match the state you need.

  3. 3Restore

    Replace the local book

    Restore it, then inspect the plan and a few bills before collecting again.

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