We published our new tool for android: Audio Control by gorb98
With Audio Control its easy to set a volume for every app on your smartphone.
For example:
You have game 1 and game 2. For game 1 you set a 50% volume. For game 2 a 25% volume. When you start game 2 the volume will automaticly set to 25% and when you start game 1 to 50%.
I hope you like the app and sorry for my bad english.
When you have any problems, please tell me 
.
Just type: Audio Control gorb98 to find it in Play Store
or copie this in your browser:
play.google.com/store/apps/details?id=gorb.com.audiocontroll
— modified on May 27, 2015, 5:12:19 PM