Moo Cow Music have released a new app. Guitarist is a guitar simulator with two guitars, effects and recording facilities.
From a very brief look at it, it seems a bit more complex than their previous applications. So I'm quite looking forward to giving it a try.
Here's what their site says about the app:
Never be without your guitar again
MooCowMusic: Guitarist is an innovative guitar simulator for the iPhone that ensures you will never again find yourself guitar-less during an inspirational moment.
Experienced guitar players can use Guitarist on the road to experiment with chord progressions, and record riffs or solos on a "musical notepad" for later study back in the studio with their full kit.
Novices can program in existing tablature and chords to popular songs, and then give note-perfect performances to their friends.
Performances can be recorded and overdubbed multiple times to create the perfect song, which can be saved for later playback. Effects and sustain can be independently applied to two guitars, which can be played together in the same song. Multiple guitar patches are available including acoustic, electric, and a 'clean tone' which can be used to play Guitarist through external effects pedals.