Brain training that adapts to you
21 mini-games for mental arithmetic, memory, attention, and logic — with adaptive difficulty that meets you where you are.
Three skill tracks · 21 mini-games
Each game has its own Elo rating (0–100) — difficulty grows as you do.
11 structured courses
Step-by-step courses — mostly school math, from the times tables to fractions and percentages — each ending in a final exam and a shareable certificate.
Daily Challenge & Arena
One fresh puzzle set every day, a global leaderboard, and a weekly arena where you climb a rivals ladder against friends.
- A fresh Daily Challenge every day, with leagues from Bronze to Diamond
- Global and friends leaderboards
- Weekly Arena — climb a rivals ladder with Arena Points
- Add friends and play head-to-head
And more
- 80+ achievements to unlock
- No ads — now or ever
- Premium unlocks extras
Frequently asked questions
Is Number Gym free?
Yes. All 21 games and two full courses are free, with no ads anywhere. Premium unlocks the remaining courses and a few extras.
Is it good for kids and students?
Yes. Most courses walk through school math step by step — the times tables, addition and subtraction, division, fractions and percentages — with theory, practice and a final exam. Adaptive difficulty keeps every game at the right level.
Does it work offline?
Yes. You can play and learn without a connection; your progress syncs across your devices once you're back online.
How is it different from other brain trainers?
Every game has its own 0–100 rating and adapts to you, so it's never too easy or too hard. You also get structured courses with certificates, a daily challenge, and no ads — not just a pile of mini-games.
What languages does it support?
20 languages, including full right-to-left support for Arabic.