Reaction Timer app icon Reaction Timer

The game that tests your nerve

Think you’re
quick enough?

Stop the timer exactly on zero. Sounds simple—right up until your thumb betrays you at the last millisecond.

Download on the App Store
  • 90,000+ downloads worldwide
  • Quick rounds Play in seconds
  • Play offline wherever you are
Reaction Timer Game 1 showing a single timer ready to be stopped on zero

The wonderfully cruel idea

One tap. One target.
Endless near misses.

Start the timer, trust your instincts and tap again to stop it. Hit zero for glory. Miss it by one and try not to throw your phone.

Game 1 with a single timer ready to be stopped
Ready…Wait for the perfect moment.
Game 2 result showing two missed timers and a Play Again button
Missed it.You’ll get it next time. Probably.

Five ways to test your reactions

Easy to understand.
Brutal to master.

Master perfect timing, juggle offset clocks, break your rhythm and prove how quickly you can react.

  1. 1Perfect ZeroStop one timer exactly on zero.
  2. 2Double TroubleStop two offset timers as each reaches zero.
  3. 3Triple ThreatKeep track of three offset timers and stop each on zero.
  4. 4Rhythm BreakerThe timer starts from a different number every round.
  5. 5Quick DrawWait for the timer to start, then stop it as fast as possible.

Keep track of your progress

7 · 14 · 10

Three timers.
Three chances to crack.

Each game changes how you read the clock—from juggling offset timers to unpredictable starts and an all-out test of reaction speed.

A real Reaction Timer Game 3 screenshot with three timers stopped on 7, 14 and 10
A player dramatically frustrated by a close Reaction Timer score

Friendships will be tested

Beat their score.
Then make sure they know.

Pass the phone, compare your best attempts and share the result when you finally land that perfect zero. Bragging rights are temporary. The screenshot lasts forever.

Download on the App Store
  • Super-short roundsA full dose of tension in seconds.
  • No Wi-Fi neededPlay on trains, planes or the sofa.
  • Perfect for a rematchThere’s always time for one more go.

Available across all your Apple devices

Your reflexes,
on every screen.

Take the challenge on iPhone and iPad, play from your wrist on Apple Watch, or put everyone under pressure on the biggest screen in the room.

  • iPhone
  • iPad
  • Apple Watch
  • Apple TV
  • Mac
  • Vision Pro
Reaction Timer available across Apple TV, Mac, iPad, iPhone and Apple Watch

Your thumb thinks it can do better

Go on. Prove it.

Download Reaction Timer free and find out how long it takes you to hit the perfect zero.

Download on the App Store Free download · In-app purchases available