Terms of use
Last changed: 18 October 2026
Who can use Brain Zap
Anyone can study as a guest, with no account. You must be 16 or older to create an account.
Free, with no payments
Brain Zap is free. There are no payments, no subscriptions and no ads.
Decks
The Brain Zap team writes the decks. They may contain mistakes: report a card from its menu and we fix it.
Your account
You sign in with your email or your Google account, so keep access to it.
You can delete your account and your progress yourself in Settings, at any time: Delete my account removes them at once.
Fair use
Don't try to break, overload or misuse Brain Zap, or use someone else's account.
No guarantee
We work hard to keep your progress safe, but Brain Zap is provided as it is, with no promise that it is always available or free of mistakes.
Changes to these terms
When these terms change, we update this page and its date. For a change that matters to you, we tell signed-in learners by email or in the app before it applies.
Contact
Questions? Write to cast3labs@gmail.com.