Useful Music Tools for Your Android Phone, and a New Sketchpad Joins Groovebox

Despite being a musical technology enthusiast, I really do think of my Android phone first and foremost as a communications device. I imagine I’m not alone, just as I’d guess that people who want a mobile music maker may look first at the iPhone. But that raises the question, are there tools you’d install on an Android phone purely because they’re genuinely useful? What tools would you use in your music, or even refuse to be without? There are actually a surprising number of tools out there on Android for music-making, though quality can be quite variable. So here, I’ll …