Numelo: Mental Math & Duels

Live mental math duels, a real rating, and something to train with every day.

⚔️ LIVE DUELS

Six numbers, one target, an opponent on exactly the same grid: best calculation wins. Rather pick your opponent? Send your grid to a friend with a link — they play in their browser, with nothing to install.

📈 YOUR NUMELO SCORE

A chess-style rating that climbs when you win and drops when you lose. Eight ranks to work through, from Apprentice to Legend.

✨ MOVES NOBODY ELSE FINDS

Brilliant, Lightning, Masterstroke, Legendary: Numelo spots the solutions almost no one sees and keeps them in your record.

🤖 TEN OPPONENTS, A DAILY CHALLENGE, PARTIES

Ten opponents to unlock, each with their own way of playing. One grid a day, the same for every player. And evenings together from a single code: up to 6 players, and up to 30 with Premium.

🎯 TRAIN

Rush against the clock, Zen with no timer, Numelo Parfait to hit the exact target, and the Academy: Numo, your coach, spots what slows you down and suggests today's session.

⭐ NUMELO PREMIUM

One payment, no subscription: your calculator profile, your times tables one by one, a weekly read from Numo, your museum of best moves, the toughest opponents, parties up to 30 players — and the ads go away.