There are some really neat metronome apps out there now. When I was taking lessons as a child, I had to use this horrible metronome with the world’s most annoying beeping sound. I’m so glad my students have a choice as to what kind of metronome to use, and even what sounds to select. There are metronomes that sound like wood blocks and even ones with a drum track!
Rebecca Udy has put together of list of recommended metronomes for Android devices. I have not tested these apps personally because I do not have an Android device, so I am relying completely on her research! 🙂