The hard working folks over at Agile Partners have come up with a steady stream of high-quality music apps for the iPhone. But TabToolkit is in a whole other league. It is by far the best guitar application for the iPhone. Heck, this may be the best app for the iPhone period!
Despite the awkward name, TabTookit, is a real gem. It enables you to display and play guitar tablature files on your iPhone with full musical accompaniment. If you've ever used PowerTabs or GuitarPro on Windows or Mac, then you know how powerful this is. In fact, TabToolkit can play any of those files or plane ASCII tab files. (Ok, you don't get music if its just plain text.) You get to see the fret board as the notes are played and it sounds great.
This is an awesome application. At $10 you might think it's expensive for an iPhone app, but believe me it is worth it. On a PC or Mac you'd pay $50-$150 or more for this same functionality. Best of all, it also runs on the iPad in full screen HD. It's not always obvious on the app store, but if you buy this for the iPhone, you also get to run it on the iPad. So in effect, you get both for the same price. If you buy only one guitar app for your iPhone or iPad, TabToolkit is the one. (And GuitarToolkit is a good second choice for tuner, metronome, chords and scales.)
No wonder these guys keep winning awards.
Keep an eye on Agile Partners. They've also got an upcoming Amp Kit Link that lets you plug your axe directly into your iPhone or iPad. Can't wait for that!