Arithmetika

Mental math in three minutes.

Need help?

For questions, bug reports, or feature requests, email bernardoramirez@outlook.com. I read every message.

Common questions

My scores aren't saving

Scores are stored locally on your device. They persist across app updates but will be lost if you delete and reinstall the app.

How do I unlock the next difficulty?

Beat the target time on the previous difficulty. When a level is locked, the home screen tells you the time you need to beat.

What is Ultra intensity?

Ultra has a tunable intensity dial. Stack perfect runs to climb it; pile up failures and it drops back down. Reaching 100% intensity unlocks champion tiers.

Is my data shared anywhere?

No. Arithmetika is a fully offline app. There is no login, no analytics, and no network connection — your scores stay on your device.