Train your mind.

Twelve short exercises, with images and sounds at precise frequencies. No score leaves the phone.

N-backRemember a shape from one or two rounds ago
Dual N-backA position and a tone, in parallel
StroopThe ink colour, not the word
Grid memoryRemember the lit squares
Mental rotationSame shape, just turned — or mirrored?
Pitch discriminationWhich tone was higher?
Tone sequenceListen, then repeat it on the pads
Visual searchOne triangle points a different way
Trail making1‑2‑3… or 1‑A‑2‑B, in order
Go / No-GoTap on green, hold still on red
RhythmTap along with a metronome
Sounds at frequenciesListening sessions at precise frequencies

The Tower · Arena of MindsFourteen doors, games on the topics you pick. All on your phone.

Cognitive-stimulation exercises, not treatment. No score leaves the phone — everything stays local.

Everything about «Mind» stays on this phone: the level you reached, the history, the minutes listened. None of it is sent anywhere and there is no account behind it.