iPhone Screenshots


Check your reaction time! now! ( Just in case! )

The reaction time (RT) is a very important skill to various activities, such as martial arts, car racing and playing games. Your reaction time can be improved with practice!

In "World Reaction" you can test and improve your reaction time in many ways:
- reaction time to a light stimulus;
- reaction time to a sound stimulus;
- reaction time to a tactile stimulus; (iPhone only)
- play against all the world in real-time;
- compare your results with the bests in the world.
- and you can also measure your precision, mental chronometry and speed;

Including awesome features as:
- voice system that speak the results;
- very accurate results in milliseconds;
- 7 different modes to play;
- and if you get the top 10 your message will be shown to the world;

* Some modes of this game can be played by people who are blind with a little help at beginning.

What's New

Version 1.0.2

Code Refined

Ratings and Reviews

3.7 out of 5

6 Ratings
6 Ratings

Crashes on iPad 2 and iPhone 4s at boot


They better update....

Unique and fun reaction test


Enjoying it so far. World reaction is all about your timing and how quick your reaction is. You are presented with tests... for example one of the tests will count up to 5 and require you to tap the screen as close to the 5 second mark as exact as you can, rating you on how close you actually get, another test will require you to wait for a sound and tap as fast as you possibly can the moment you start to hear that sound, your rating will be based on how much time it took you to tap the screen after the sound. There about 6 different reaction tests total...light stimulus, sound stimulus, tactile stimulus, time precision, mental chronometry, and speed test. With your scoring based on how quick your reaction time is the endgame results will go on a leaderboard.

The presentation of the game has a serious tone to it, but is neat and fun at the same time. I love the robot voice telling you your results after a session. The game has a unique setup and is neatly and well designed. I'm liking it and I recommend it for people who are interested in taking the test.

Test your gaming potential


Test your reaction time to visual and audio stimuli, estimate a 5 sec sequence as accurately as possible, accuracy tapping at the end of a five sec count, and fastest 5 conseq taps.

A number of elements make this simple concept effective:
- Allows for great precision measuring, up to 1000th/sec
- nice layout with clear visibility of performance and scores
- live online scores and tracking of your pers best

the younger ones among us will find it a real competitive challenge to improve their abilities, and anyone over 20 can measure and observe how the human species slowly disintegrates after having reached its peak.

A useful comparative tool for a REAL game addict's gaming potential.


Rogerio Penchel
917.7 KB
Requires iOS 4.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Jose Reinaldo, Rogerio Penchel & Rodrigo Navarro


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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