Android: Hearing Saver is a handy utility that eliminates the hassle of having to adjust the volume on your Android phone every time you plug in or unplug your headphones. The free app can also automatically mute notification sounds and the ringer for you.
The small app works very simply and is easy to configure. After you set it up, it just runs in the background and your volume presets take effect. So now you can listen to music full blast in the car without headphones, then later on plug in the headphones and not have to adjust the volume. Hearing Saver can also ensure you won't be interrupted by email notifications when you're listening to your favourite tracks.