Pricing

Math Challenge is free to play. A single payment of $3.14 USD, not a subscription, adds the extras.

Free

All 35 mental-math topics, every lesson including the 36 Magic Tricks, and the Daily Challenge — across web, Android and (soon) iOS, on the same account.

The $3.14 purchase

The advanced Hard, Timed and Ultimate modes and the Pro cosmetics. The website shows no ads; the Google Play app shows at most three a day, and buying removes them.

See our refund policy and terms.