I was just talking to my girlfriend about an app I have for my phone called MasturbatorPro, which basically lets you run the phone's vibrate function either constantly or on and off with various frequencies. While I've never actually used it for its intended purpose, it's great as a testing app, and I was wondering if the DS has anything similar. I'm aware of DiagnoSe, but for whatever reason the rumble test does not work with my 3-in-1. It's not busted in any way, however; rumble works fine in commercial games, so I was wondering if there are any other testing apps I could try out. Thanks for any help.