The amount of use that I have gotten out of this app is ridiculous. I like to find midis of songs then use the guitar fretboard setting to write tabs when I dont feel like figuring out or counting the staff to find note names. It has a built in guitar fret board and piano to show all the different ways to play the midi you choose. This app is worth far more then what you pay. I would buy an iPhone just for this app.
Update: I would pay 5$ for a feature that lets me view/print a guitar tab translation from the current midi. It would save soooo much time. As it is now I use this app primarily for the fretboard that allows you to get somewhat of a tab. But for faster pace songs it gets annoying to try and rewind and watch. And if you pause the highlighted frets disappear. Maybe you could make another app that just allows midi translation to guitar/piano tab (preferably one that can be sent as a PDF or printed) as someone who just cant grasp how scales or music theory works this would be amazing/ an instant buy. It might be a small niche of guitar players that would need it but who knows maybe name it something guitar midi magic or something click batey and add pictures of hot girls playing guitars. That might help it sell at the cost of your dignity. /s
Niceproxxx&$ about MIDI Score