Tapvelo

Tapvelo is a reaction speed trainer that challenges you to tap the screen the moment a color change appears. Each round is unpredictable — the flash can come early or late, keeping your reflexes honest.

Track your personal records locally, no account needed. Every result is saved on your device so you can see how your reaction time changes over sessions.

The app includes a dark theme option (light, dark, or system-default), haptic feedback for taps, and adjustable font sizes so the interface fits your preference. All settings persist between sessions.

There are no ads interrupting rounds, no sign-up screens, and nothing to configure before you start. Open the app, wait for the flash, tap, see your time.

Simple concept. Hard to master.