Sharpen the mind. Earn your belt.
Kung Fu Math turns dull arithmetic into a stimulating mental martial art. Belt system meets science-backed brain training — for a faster, sharper, more enduring mind.
#BlackBeltChallenge · Four apps · One free account
The apps · 道場
Pick a form. Start training.
All four forms are open and free in the online dojo — one account covers everything.
Kung Fu Math
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The flagship form. Mental arithmetic turned into a martial art — eight belts, timed gradings, and training sets you choose yourself.
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Kung Fu Math Junior
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The beginner form. Gentle number sense, counting and early arithmetic for young students taking their very first stance in the dojo.
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Kung Fu Math Airbender
Play free in the dojo
An app that challenges you at levels you didn't think were possible. Multitasking taken to a new level — math, memory and spatial orientation at once.
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Kung Fu Math Wude
Play free in the dojo
The fast form. Bursts of pure basic math that challenge your focus, with time pressure you have never experienced before.
Play in the dojoLearn more →Choose your belt · 帯
Eight ranks, one standard.
White, yellow, orange, green, red, blue, brown, black. Rank is not decoration — every belt demands cleaner technique across more difficult problems, and no belt is handed out for showing up. When you grade you always get 30 seconds per problem, whatever your rank.
White
7th kyū
Yellow
6th kyū
Orange
5th kyū
Green
4th kyū
Red
3rd kyū
Blue
2nd kyū
Brown
1st kyū
Black
1st dan
Why mental math · 何故
A full workout for the brain.
Mental arithmetic is not just mathematics. Calculating in your head activates both the frontal and parietal lobes: you hold numbers in working memory, manipulate them logically, and decide fast under time pressure. That raises mental processing speed and cognitive flexibility.
Who trains here · 誰
Four kinds of student
01
Everyday brain training
Skip the scroll 📱⚡
Hours a day disappear into autopilot scrolling and the mind goes dull. Trade 5–10 minutes of dead time for progressive training, pick your own techniques, and feel your number memory and mental sharpness improve in daily life.
02
Students
The bridge to university 🎓
Two decades of digital shortcuts left a real knowledge gap. Many students stumble on diagnostic tests because fractions, powers and algebra never entered the spine. Automate your arithmetic and grade your way to brown or black belt to build the fluency advanced studies demand.
03
Seniors & brain health
Keep the mind young 🧓
Processing speed drops with age and the brain hates autopilot. Regular mental exercise builds a cognitive reserve that makes the brain more resilient. Switching constantly between techniques forces adaptation — and preserves mental youth.
04
Career & tests
Perform under pressure 💼
Quantitative sections and timed case interviews demand fast numerical analysis. Stopping to grind out basic figures wrecks your focus. Train to deliver the answer instantly and confidently when it matters most.
The training · 稽古
What makes the dojo different
📈
Progressive challenge
Advance from white belt to black. Difficulty adapts dynamically at your pace so the brain is always optimally challenged and motivation holds.
🎯
Train your own dojo
Choose exactly which techniques — addition, subtraction, fractions, powers — and which belt levels you want to sharpen today.
🏅
Measurable progress
Test your limits by grading when you feel ready, and see in black and white how your cognitive ability develops.
🧘
Focus that lasts
In an age of endless scrolling, holding attention even for short stretches has become hard. Every session trains sustained, undistracted focus — the kind that carries over into study, work and everyday life.
🔄
Zen mode
Is 30 seconds too tense? Train in 30, 60, 120 or 300 second sessions. When you grade, it is always 30 seconds per problem.
Invest in your brain the fun way.
Create a free dojo account, pick your name and flag, and start your journey toward the black belt.
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