A free app for Android, by choiillye.

If you are trying to develop your timing skills, this app will be useful to you.

Go Timer is an app that lets you test your reaction time.

If you can keep your finger on the screen for a certain amount of time, you will be able to perform tasks such as pressing a button, turning a switch, or opening a door.

Go Timer will show you how long you have to react to the task.

You can perform multiple tasks. For example, you can press a button, turn a switch, or open a door.

The app has a simple design.