Help and support

Write to support@localhost and a person will reply, usually within two working days. Mention the phone you use and, if you can, what you tapped before the problem.

Forgot your password

On the sign-in screen, choose “Forgot password”. We email a six-digit code that works for ten minutes; enter it with your new password.

A question looks wrong

After answering, tap “Report a problem with this question”. An editor checks every report against the official source. A wrong or offensive AI tutor explanation can be reported from the explanation itself.

Your pass

A pass is bought once and never renews. On a new phone or after reinstalling, sign in and tap “Restore purchases” on the Premium screen. Refunds for passes bought in the app are handled by the App Store or Google Play.

Notifications

At most one a day, never at night. Turn each kind on or off under Notifications and account in the app.

Your data

Read the privacy policy. To delete your account and its data, use Delete account in the app, or delete it on the web.