Math MagicianMental Math
A quicker head for numbers. One trick at a time.
Understand the shortcut, watch each step, then practice until it feels natural. For students, teens and adults who want everyday math to feel easier.
Free to start. Lessons, every drill, flashcards and review are free. Pro adds unlimited Arcade, custom workouts, times-table practice and streak repair.
Multiply a two-digit number by 11
A short website lesson you can try before downloading.
Learn the trick. See it work. Make it yours.
Learn the trick
Short, clear lessons across twelve stages, from place value and carrying to the ×11 shortcut, squaring numbers near 100 and smart estimation. Beginner primers ease you in.
Watch it unfold
"How it's done" animates every step, so you see which number to hold in mind and when to bring it back. Turn on voice-along to hear each step.
Practice at your edge
Questions get harder after correct answers and easier after a slip, so practice adjusts as you go.
Take a look inside
A complete mental math guide
Twelve stages of step-by-step lessons: left-to-right addition, the ×11 shortcut, squaring near 100, divisibility rules and estimation, then on to number patterns, algebra and geometry. The whole guide is free.
Practice that adapts to you
Fresh questions for mental-math tricks, number patterns, algebra and geometry. A mistake bank collects the problems you miss and brings them back for review.
The 60-second Arcade
Feeling sharp? Jump into a one-minute blitz, build combos, level up mid-round and chase your high score on four tracks: Mixed, Add & Subtract, Multiply and Squares. One free game a day, unlimited with Pro. The weekly league is played offline against made-up players, so no strangers and nothing sent.
Flashcards that remember for you
Spaced review brings each card back when the review scheduler expects you to need it. Track mastery trick by trick, keep a daily streak, set a goal and get a gentle daily reminder if you want one.
For anyone who wants a quicker head for numbers
- Students sharpening their arithmetic.
- Adults keeping their minds quick.
- Anyone ready to ditch the calculator for everyday sums.
Purchases sit behind a quick grown-up check, so younger players can't buy by accident. A parent view, behind the same check, shows how your child is doing this week and what to practice next.
Mostly free. Pro when you want more.
Lessons, every drill, flashcards and review are free for good. Pro adds unlimited Arcade (one free game a day without it), custom workouts, times-table practice and streak repair, through Google Play.
Lessons, every drill, flashcards and review are free. Pro adds unlimited Arcade, custom workouts, times-table practice and streak repair.
Monthly
Starts with a 7-day free trial for new customers. Cancel anytime in Google Play.
Yearly
Less than $1 a month. Cancel anytime in Google Play.
Lifetime
Pay once, keep it. Never renews.
US prices. Prices, trial eligibility and renewal terms are shown in Google Play before purchase. Your local currency and tax may differ.
Questions
Do I need to be good at math already?
No. Beginner primers start from place value and carrying, and every trick is shown step by step before you're asked to use it.
Does it need the internet?
No. Lessons and practice work offline. The app only goes online to check, buy or restore Pro (a quick check when it opens) and, if you leave "Share anonymous usage" on in Settings, to send anonymous usage counts (never your name, email or answers).
Do I need an account?
No. There's no sign-up and no ads. Your practice and progress stay on your device.
How does the free trial work?
The trial is on the Monthly plan, for new Google Play customers: 7 days of Pro free, then the monthly price shown by Google Play. Cancel in Google Play before the 7 days end and you won't be charged.