Thanks for this app. Found it by accident looking for a way to better control the volume on a Pixel 2 XL. I don't now about the limitations on this phone but is it possible to add ringer volume to your app? Usually I have the ringer volume at max but it rings at max through a headset also and is extremely loud using the same ring tone used by the phone speaker.
Thanks again,
https://developer.android.com/reference/android/media/AudioManager.html#STREAM_RING