What is the Notification LED application, how does it work?

According to the introduction of tmrks, Notification LED is a Tools app on the Android platform. There is currently a 0.9.22 version released on Sep 16, 2017, you can see the details below.

Battery level
･20% or less than 20%:Red
･21-40%:Magenta
･41-60%:Yellow
･61-80%:Blue
･81-99%:Green
･100%:turn off

During charging LED flashes a completion state of charge, it will be off and charging is complete.

Note: If the application of the same function is mixed, there is a possibility that it does not work correctly.

Operation check model
nexus 5,android 6.0.1

Minor fixes