Reaction Lab is a collection of quick browser games built around reaction speed, target clicking, decision responses and pattern memory. Every mode runs directly in your browser, so you can start a test without creating an account or downloading an app.
If you searched for a reaction time test, reflex test, aim reaction game or visual memory test, choose the mode that matches what you want to practise. Results are stored locally on your device where the mode supports personal bests.
Classic Reaction measures one clean response to a visual colour change. Choice Reaction adds a decision by asking you to respond to A, S, D or F. Fakeout adds distracting signals and false-start penalties.
Aim Reaction turns reaction testing into a target-clicking challenge with 1 to 100 targets. Memory Sequence shows a growing pattern of five shapes that you must reproduce in the correct order.
Yes. The current games are free browser tests and do not require a login or download.
Yes. The games support touch input and the layouts adapt to smaller screens. Some modes can feel different on a touchscreen than with a mouse or keyboard, so compare results on the same device when tracking improvement.
Reaction results naturally vary from run to run, and browser/device latency can also affect the number. For a cleaner comparison, use the same device, browser and input method and look at several attempts rather than one isolated score.
Aim Reaction is the target-based mode. You can choose five target styles and select a round of 1, 5, 10, 20, 50 or 100 targets.