Petersons has a great reputation for serious (professional) strobe tuners, I own two of them in my guitar rig. When I saw this app, I figured it was a gimmick, but I bought it anyway - folks, this is not a gimmick. This is the real deal, and when you consider that the price is $9.99 vs hundreds of dollars for even a stomp-box version, this is a steal, AND you get to carry it around in your pocket. I bought the connecting cable too, although it will work ok-ish without it. An amazing application, I use it all the time now.
I also found a little stand for the iPhone so I can use the app without the phone flopping around (and getting scratched). If Peterson is reading this, how about a cable that allows bypass so I dont have to keep unplugging my amp cable?
Larry dLion about iStroboSoft