Privacy

Crambox collects as little as it can.

Without an account

Your progress is saved only in your own browser. We don't see it, and clearing your browser data erases it.

With an account

We store your email address, the courses you pick and your practice history, so your progress follows you between devices. Accounts are run on Supabase. We never sell your data and we don't show ads.

Deleting your account

You can delete your account and everything attached to it at any time from your settings.