Deletes all saved progress, quiz history, and settings.

Controls which SI prefixes appear in generated formula questions. Uncheck a prefix to exclude it.

Maximum trailing decimal digits shown in hints, answers, and calculations. Default: 3.

Adds a soft glow halo to cards, buttons, and borders using your accent color.

Click any shortcut to rebind it. Press the new key, or press Escape to cancel. Arrow keys and Numpad remain available as fixed secondary bindings.