Train your
reactions.
Nine quick drills that sharpen your reflexes. Thirty seconds to learn, a lifetime to master. Fully offline — no accounts, no network, no leaderboard.
Small app, real bite.
Everything runs on your phone. The only thing online is this page.
Personal bests, on your device
Every drill keeps its own top-10 fastest times in local storage. Best, last and top-10 average, with podium medals on the Bests tab. Nothing leaves the phone.
No accounts. No network. No leaderboard.
Open it and play. There is nothing to sign up for, nothing to sync, and nobody to compare against but yesterday-you.
It talks back
Miss your best and the app has something to say about it — mostly ragebait, occasionally encouragement, and it gets sharper the longer your cold streak runs. Mute it in Settings if you must.
Share the flex
A themed score card — your time, the drill, your rank and the date on the same graffiti wall as the app — rendered to an image and handed to the share sheet.
Light & dark, your call
Follows your system by default, with a manual override that sticks. The whole street-art look repaints itself either way.
Built to feel good
Haptics on every arm, hit and record. Numbers that roll. Text that morphs between states. A splash that lands like a stamp.
The drills.
Each one keeps its own top-10 personal bests, locally. Beat yesterday-you.
Reaction
Tap to arm, wait for green, hit it. One clean reaction in milliseconds.
Go / No-Go
Tap green, hold still on red. One slip on red ends the run.
Precision stop
Stop the hidden clock dead on the target — 1, 2, 3, 5s or Mix.
Aim trainer
Twenty targets, one thumb. Chase them down as fast as you can.
Choice reaction
Two pads go amber, one turns green. Tap the right one, five times.
Tap speed
As many taps as you can in five seconds. The bar drains — go.
Sequence memory
A 3×3 board lights up in a growing sequence. Repeat it back.
Math sprint
Ten sums, four answers each. A wrong pick costs you a second.
Number hunt
A 6×6 grid — tap them in order, or just the evens, or just the odds.
A whole street wall in your pocket.
Graffiti visual language, light or dark, drawn entirely in code — no stock art.
People are obsessed.
Ten more rounds. Just ten more.
“Got my reaction under 200ms and now I will not shut up about it. This app is a menace.”
“The trash talk after a bad run is unhinged and I love it. Ten more rounds. Just ten more.”
“No login, no ads, works on the tube with no signal. Exactly what a tiny app should be.”
“Number hunt broke my brain in the best way. I am faster at everything now, probably.”
“Perfect toilet game. There, I said it. Thirty seconds, sharper reflexes, back to life.”
“The share card looks so good I posted my worst score by accident. Still fire.”
Good questions.
Is it really free?
Yes. Every drill and every feature is free, with no ads and no account. There is a voluntary coffee link if you want to support development.
Do you collect my data?
No. Reflex has no accounts and no analytics servers of its own. Your scores live in local storage on your device and never leave it.
Does it need internet?
Never. Reflex is fully offline — open it on a plane, in a tunnel, anywhere.
Which phones?
Reflex is on the App Store for iPhone and on Google Play for Android, with the same nine drills on both.
Is there a leaderboard?
No global leaderboard by design — the only person to beat is your past self. Each drill keeps your ten fastest locally.
Get faster. Right now.
Reflex is on both stores, free, with no accounts and no ads.
The app is free. Coffee keeps the drills coming.