[logosmonkey]

Speaking specifically about android mobile I've found minimalist phone to be a really nice tool to cut down on jumping from app to app for hours. First, I just like the aesthetics of it as a launcher and second the built in nag warnings for timing specific app usage make you conscious of your consumption which I think is critical. Having that metric works a lot like tracking calories, it's hard to realize just how much you are consuming without some sort of tracking - at least it is for me.

The fact that it has no icons also helps, it makes it far more arduous to open apps that you might not use a ton or that you don't have a shortcut for in your home screen menu so you tend to start ignoring a lot of little time sinks.