How do I restore Premium?
Premium is a single purchase with no subscription. Apple handles in-app purchases and restoration.
In the app, open Settings › Version and purchases › Restore purchases, or tap “Restore purchases” under the button on the Premium screen.
The ad-free version is now Premium: if you already bought it, it’s still yours.
How do I turn on iCloud sync?
iCloud sync is optional and included with Premium. It stays off until you turn it on in Settings.
Your cards, quizzes, review schedules and recent searches stay up to date on your devices signed in to the same iCloud account. Credits and settings stay on each device.
What are review credits?
Search and your saved words are free. Reviews use credits: each saved answer uses one, even an incorrect one, and in Matching pairs each pair found uses one. You can get more by watching a short video.
With Premium, reviews are unlimited: all four modes, no credits to count.
Where is my data?
No account is required. Your recent searches, cards, quizzes, review schedules and credits are stored on your device, and in your private iCloud if you turn on sync.
How your data is handled is set out in the privacy policy.