Reflex Lab: Brain Speed Test

How fast is your brain, really?

Reflex Lab packs 15 measurements of reaction time, memory, focus and motor precision into one app. A round takes 30 seconds to a minute. And instead of just throwing a number at you, it places that number on the human distribution curve — so you see your percentile and a rank from S+ down to D.

■ 15 tests

• Reaction Time — tap the moment the screen turns green
• Auditory Reaction — the screen never changes; react to sound alone
• Mind Clock — judge a target duration with no clock to help you
• Aim Trainer — hit targets fast and accurately
• Typing Speed — retype sentences against the clock (WPM)
• Number Memory — how many digits can you hold after one glance
• Sequence Memory — reproduce the order the tiles lit up in
• Visual Memory — remember every tile that flashed
• Chimp Test — can you out-remember a chimpanzee
• Verbal Memory — have you seen this word already this run
• N-Back Memory — a working-memory task: same tile as N steps back
• Color Trap — catch the clash between meaning and ink colour (Stroop)
• Impulse Control — tap on green, hold back on red (Go/No-Go)
• Instant Count — grasp the quantity at a glance, without counting
• Peripheral Vision — keep your eyes centred and name the direction

■ Not just a score — an interpretation

• Your position on the human distribution curve, with a top-% figure
• Ranks from S+ / S / A / B / C down to D
• An ability radar across Speed, Memory, Focus and Motor
• A combined brain score and its trend over time
• A weakness report built from your round-to-round spread
• Pick an age band and everything is recalculated against your peers

■ A reason to come back

• Daily Challenge — 5 tests chosen by the date, identical for everyone that day
• Streaks, and a freeze to rescue one when you miss a day
• 30 achievements
• Full Gauntlet — every test back to back, then one combined report

■ Built to be comfortable

• 10 languages: English, Korean, Japanese, Chinese, Spanish, Portuguese, French, German, Indonesian, Vietnamese
• Works offline — no sign-up, no login, no server
• Backup export and restore (JSON)
• Shareable result cards
• Dark and light themes, colour-blind mode, left-handed mode
• Personal targets per test
• A daily reminder at a time you choose

■ Privacy

Your records and settings stay on your device and are never sent to the developer. The app is free and ad-supported; Google AdMob runs in order to show those ads.

Contact: tk32189@naver.com

Recent changes:
Now in 10 languages, with a fresh new look. 🌏

• English, 한국어, 日本語, 中文, Español, Português, Français, Deutsch, Indonesia, Việt
• Pick your language on first launch; change it anytime in Settings
• Typing Speed and Verbal Memory now use per-language sentences and words
• Redesigned throughout: crisp vector icons, stronger contrast, steadier numbers
• Fixed: all sound effects were silent, including the Auditory Reaction cue
• Added privacy policy, open-source licences and version history