A free app for Android, by AppMaze.in.
This is a very useful app to help you know if your device is being used by any application. It is an app that is compatible with Android devices.
Once you open the app, you can configure it to show you the usage of the camera and microphone of your device. It is possible to turn on and off the notifications. It is possible to close the app and let it run in the background.
If you want to turn off the notifications, you can set the time for when you want to receive the notification.
You can configure the color of the indicator. It is possible to turn off the indicator if you don't want to be notified. It is also possible to set the number of pixels of the indicator.