Every light is a shape and a word: a circle that says Fits, a diamond that says Misses. You never have to tell them apart by colour.

Text size in Menu > Settings goes up to 150%, on top of your phone's own text size. We check that the main screens still fit a narrow phone with text three times its usual size. A sentence is never cut short and never shrunk to fit, so a final “not” always stays readable.

If your device asks for less movement, nothing fades, flips or counts down, and you lose nothing. Sounds are short tones at the big moments, like solving a rule. They stay off until you turn them on, and only repeat what is on screen. Vibration is a small tap, and some phones can't vibrate. Switch either one in Menu > Settings.

Every screen is built to work with a keyboard and with a screen reader, and automated accessibility checks test them before any change goes live.

Light and dark follow your device. Major controls are at least the size of a fingertip.

If something here gets in your way, please tell us. We would rather fix that than add the next thing.