Elevate how you calculate.
The intelligent mental-math app for iPhone and iPad. From basic arithmetic to number theory — fully offline.
Heads-up: the app's interface is currently German-only. More languages are on the roadmap.
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Grundrechenarten
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376
8game modes
40+operators
100%offline
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Three ways into the app.
The idea
Why mental math is trainable
Not a talent — a muscle. The philosophy behind TauState, and why calm daily practice beats perfect runs.
Read the philosophy The appEverything that's inside
8 modes, 40+ operators, number systems, the Lab, statistics, achievements. An overview of everything TauState can do.
See the features Try itPlay a round in your browser
The four basic operations in the real interface — right here, no install. Three lives, combos, high score.
Start the demo
Private by design
Your data stays your data.
No accounts, no ads, no data collection. TauState works fully offline — even speech recognition runs on your device. What you practise is nobody's business.
Read the privacy policyReady to elevate how you calculate?
Free on TestFlight. iPhone and iPad. Private by design.
Join the beta