This is a free, useful and easy-to-use app. You can connect an LED to your Android device and use it as an LED bulb. It is designed to work with the hardware of most Android devices and it will work even if your phone does not have an LED. You can use it for many things, like a regular flashlight, as an indicator light, or as a light source.

To use the app, first, you need to download it from the Google Play Store. After that, you can start using it right away. To do that, just open the app and click on the "Connect" button. You will be able to choose from the options available on your phone.