EVERY DAY
Abako Daily
The numbers game as a daily ritual — the same idea as the numbers round on Countdown, or NYT Digits: some numbers, one target, the four operations. At midnight, new puzzles, the same for everyone.
No timer. Without the panic, you search longer and find more.
You’re allowed to get it wrong. Undo, try again. Spot on the target is three stars; within ten, that’s already two.
A few minutes a day. Four puzzles, five on Sundays. Then compare your stars with family or friends.
TO IMPROVE
The Dojo
Times tables, number bonds, doubles: the Dojo takes the skills that cost you the most seconds and drills them one at a time.
One skill at a time. The Dojo sees what resists you and brings it back, without drowning you.
Medals that tell the truth. Bronze, silver, gold: they measure your accuracy and ease, not your luck.
From white belt to black. Earn every medal in a world, and its master will fight you for the belt.
FOR THE CONTEST
The Arena
Calculations back to back, harder and harder, until your third slip. This is where “faster than your brain” means something.
Three hearts per game. A slip, or a calculation that takes too long, costs a heart. A game with no right answer costs you no Elo.
An Elo rating, like in chess. It rises when you succeed and places you in the rankings.
Thirty-six bosses. Thirty-one wait for you in the Arena; the other five guard the Dojo belts.
Short Tournaments. A new one each round, a timed challenge the same for everyone, with a ranking and trophies.
From gentle to fearsome
FREE, NO ACCOUNT, NO ADS
Nothing to install, no sign-up to start. Made in France by an independent developer: about and contact.
HEARD ON RTS LA PREMIÈRE
Swiss public radio, « On en parle », 27 August 2026: a ten-minute segment on a small daily dose of mental maths.