Is Brain Zap free?

Yes. Brain Zap is free while it's in preview, and swiping library decks will always be free.

• No ads.
• We never ask for payment or credit card details.
• Start as a guest, no account needed.
• Save your progress with a free account if you want.
• If we ever add a paid plan, for example for private decks or other extras beyond the library, we'll say so on this page at least 30 days before it starts.

Last changed: 10 October 2026