Support
We usually reply within a few days.
Email [email protected] for any question — bugs, billing, content mistakes, or data requests. Please include your app version (shown in Settings) when reporting a problem.
Frequently asked questions
Do I need to register or add an email address?
No. You can try the app, choose a plan, restore purchases, and study without entering an email address. Add an email later under Settings → Sync your progress if you want to sign in on another device.
Does Yuzu Dojo work offline?
Yes. Decks are stored on your device, so you can study anywhere — on a plane, on the subway, without any connection. Your progress is saved locally and syncs automatically the next time you're online.
How do I restore a purchase?
Tap Restore purchases on the plan screen while your device is signed in to the same App Store or Google Play account used for the purchase. If you used Yuzu Dojo without an email address on the old device, the subscription can be restored to this device, but learning progress left only on the old device is not transferred. If you added an email address, sign in with it to recover your synced progress.
How do I cancel my subscription?
Subscriptions are managed by the store you subscribed through, not inside the app. Deleting the app or your account does not cancel a subscription.
- iPhone / iPad (App Store): open Settings on your device → tap your name → Subscriptions → Yuzu Dojo → Cancel Subscription.
- Android (Google Play): open the Play Store app → tap your profile icon → Payments & subscriptions → Subscriptions → Yuzu Dojo → Cancel subscription.
If you are on a free trial, cancel at least 24 hours before it ends (App Store) or before renewal (Google Play) to avoid being charged. Your trial end date is shown next to Yuzu Dojo in the same Subscriptions screen you cancel from.
Can I get a refund?
Payments are processed by Apple and Google, so refunds are handled by them under their own policies. For App Store purchases, use Apple's "Report a Problem" service; for Google Play purchases, request a refund from your Play Store order history. If you're stuck, email us and we'll point you in the right direction.
How do I delete my account and data?
In the app, go to Settings → Delete guest data if you have not added an email address, or Settings → Delete account if you have. Your account data is permanently deleted 30 days after the request, and your review history is irreversibly anonymized — see the Privacy Policy for details. You can also email us to request deletion. Remember to cancel your subscription separately (see above).
Which devices and OS versions are supported?
Yuzu Dojo is built for iOS and Android phones and runs on recent versions of both. The exact minimum OS versions will be listed on the App Store and Google Play pages at launch.