I'm looking for a volume control app or widget for my Samsung Nexus that lets me control ringer volume and notification volume separately. Now I use Volume Control +, and it has separate dials for them, but when I take notification down to silent, ringer goes with it. (It appears to work, but if I switch away and then back, both are silent.) At night, I like to leave ringer sound on just in case of emergency, but I don't want to be awakened by every email or FB post. Any ideas?