# Random Reaction Timer
> Improve random reaction time for sports,karate, boxing, mma , judo,etc.
Canonical page: [https://chrome-stats.com/d/com.cop.mus.reactiontimer](https://chrome-stats.com/d/com.cop.mus.reactiontimer)
## Overview
- **ID:** `com.cop.mus.reactiontimer`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Muscode
- **Category:** HEALTH\_AND\_FITNESS
- **Downloads:** 24,614
- **Rating:** 4.09 / 5 (290 ratings)
- **Version:** 5.0.0
- **Last updated:** 2026-06-16
- **First published:** 2018-03-21
- **Publisher country:** ZM
- **Size:** 25 MB
- **Data as of:** 2026-09-08
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.cop.mus.reactiontimer)
- **Website:** [https://reactiontimer-9496f.web.app/](https://reactiontimer-9496f.web.app/)
- **Privacy policy:** [https://sites.google.com/view/random-reaction-timer-policy/home](https://sites.google.com/view/random-reaction-timer-policy/home)
## Description
Random reaction timer is a simple Timer that can improve your reaction time, by playing a sound command or action at predefined random intervals and your job is to react to the sound and perform the correct action as soon as you hear it .
Random reaction timer Modes
1. Timer Plus
2. Stopwatch Plus
Timer plus
this mode good for shadow boxing you simply set the time and click the play button and start reacting to the actions or commands you have set.
Stopwatch plus
In Stopwatch mode, you simply set the number of actions you want to do and click the play button and again you wait and react to actions you have set, it's that easy.
Playlist
This is where you make a playlist by checking actions or sounds you want to play and click save at the top right corner of the screen, both Random reaction timer modes use the same playlist, you can also record your own actions directly from the app and upload your own sound as well.
Settings
In the setting screen of Random reaction timer you can set
1. Min interval
2. Max interval
3. Prepare Time
4. Start Sound or command
5. End Sound or Command
min interval is the lowest possible time you can wait before a sound is played.
max interval is the highest possible time you can wait before a sound is played.
Note the interval is in seconds.
Prepare time this is the time delay before the session starts, giving you time to prepare.
start Soundthis is the sound played at the beginning of the session. default sound is "Ready"
End Sound this is the sound played at the end of the session. default sound is "Done"
That's it you done and you can use this Random reaction timer for what you want in that sense, sports or what ever you think of, Enjoy.
## Rankings
- #398,877 — Overall
## Permissions and access
### Permissions
- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK`
- `android.permission.INTERNET`
- `android.permission.MODIFY_AUDIO_SETTINGS`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.READ_MEDIA_AUDIO`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.cop.mus.reactiontimer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.gms.permission.AD_ID`
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Source: [Chrome-Stats](https://chrome-stats.com/d/com.cop.mus.reactiontimer)