Frequently asked questions
Short answers to the most common questions.
Is TauState free?
Yes. During the beta, TauState is available for free through Apple's TestFlight — with no ads and no in-app purchases.
Does TauState work offline?
Yes, completely. TauState makes no network connections. Even speech recognition runs entirely on your device.
Which kinds of math can I practise with TauState?
From the four basic operations through percentages, powers and roots to number theory and number systems (binary, hexadecimal, Roman). Over 40 operators across 8 game modes in total.
What makes TauState different from other mental math apps?
Depth and privacy. Most mental math apps cover basic arithmetic and percentages — TauState goes further, to powers, roots, number theory and number systems (binary, hexadecimal, Roman), across 8 game modes. And everything runs completely offline, with no accounts, ads or tracking — even speech recognition stays on your device.
What age is TauState suitable for?
Any age. The adaptive difficulty adjusts to your level — from a primary-school pupil practising times tables to an adult training demanding number theory.
Does TauState collect my data?
No. TauState has no accounts, no tracking and no ads. Your progress and settings stay solely on your device.
Which devices does TauState run on?
iPhone and iPad running iOS 18 or later.
Do I need an account?
No. You can start right away, with no sign-up or login.
What is the Lab?
In the Lab you build your own training: choose operators, number ranges and modifiers freely, so you practise exactly what you're working on.
Is there a voice mode?
Yes. You can speak your answers instead of typing them. Recognition runs on-device, and no recordings are stored.