Book Tracker syncs your library (books, reading statuses, progress, notes, quotes, statistics) across iPhone, iPad, and Mac through Apple’s iCloud. No extra account, no login, no subscription.

To enable it:

• iPhone / iPad: Settings → Apple ID → iCloud → Show All → make sure Book Tracker is ON.
• Mac: System Settings → Apple ID → iCloud → make sure Book Tracker is ON.

All your devices must be signed into the same Apple ID.

Once enabled, sync is automatic in the background. Changes appear on your other devices within a few minutes.

👉 Full tutorial: How to sync Book Tracker across iPhone, iPad, and Mac
👉 Sync not working? See iCloud sync is not working — how do I fix it?