Write to us and we normally reply within one business day. Before that, the answers below cover most questions.
Subscriptions are managed by Apple, not by us. Open Settings › Apple Account › Subscriptions on your iPhone and cancel there. Cancel at least 24 hours before the renewal date. You keep Premium until the end of the paid period.
Refunds are handled by Apple. Request one at reportaproblem.apple.com with the Apple Account used for the purchase.
Open the app, go to the paywall and tap Restore at the top right. Make sure you are signed in with the same Apple Account you paid with. If it still does not unlock, write to us with the purchase date.
In the app: Profile › Delete account (at the bottom of the profile screen). This removes your account and study data. Personal data is erased within 30 days; backups rotate out within 7 more.
Report it from inside the quiz: the flag icon next to the Next button sends us the question, your answer and a comment. That is the fastest way for us to fix it.
Progress syncs through your account. Make sure you signed in with the same method (Apple, Google or email) on both devices. Guest progress stays on the device until you create an account.
Yes. Log in at carnetflow.com with your app account. Accounts are created in the app.
In the app: Profile › Language. The interface language and the language of the questions are switched separately.
Or write directly to team@carnetflow.com.