I wish I could suggest something, but I lost the app I found once.

At one time I was looking for something (can't remember what), and I found a fantastic Android app that did exactly what you're talking about and did it well. I uninstalled it for whatever reason, and a year later I tried to find it again and it seems to have completely disappeared. I've tried a few others but they all seem like junk. I'll see if I can find the good one again...