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Reflex Lab
Brain Reaction Speed Test

Where do your reflexes rank among humans? Fifteen tests of reaction speed, memory, attention, and aim in one app. A round takes 30 seconds to a minute, and the result plots you on the human distribution curve — your top percentile, and a rank from S+ down to D.

Fifteen tests

Speed isn't the whole story. Reflex Lab measures four separate abilities and ties them together in a single radar.

Reaction time

Tap the moment the screen turns green — plus an auditory version where the screen stays put and only sound cues you.

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Aim & typing

An aim trainer for hitting targets fast and accurately, and a typing test measuring your WPM against the clock.

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Five memory tests

Number, sequence, visual, and word memory — plus the chimp test, to see if you can outremember a chimpanzee.

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Attention & inhibition

Color trap catches the Stroop moment when meaning and ink disagree; the patience test is Go on green, hold on red.

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N-back & subitizing

Judge whether the tile matches the one N steps back, and grasp a count at a glance without counting.

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Peripheral & time sense

Name the direction out of the corner of your eye while fixating center, and hit a target duration with no clock.

📊 A score with an interpretation attached

🔥 A reason to come back daily

🛠️ Nice touches

🔒 Your records stay on your device

Records and settings are stored only on the device and are never sent to the developer. With no sign-up, no login, and no server, the app works exactly the same in airplane mode.

The app is free and includes ads; Google AdMob runs to display them.

Where do your reflexes rank among humans? ⚡

Thirty seconds a round. Fifteen tests, one percentile, one rank.

📲 Get it on Google Play