Originally launched alongside the iPad 2, the app allows users to create and record their own songs using a selection of virtual instruments.
Less experienced musicians can take advantage of ‘smart instruments’ which allow them to create songs from an extensive library of custom chords.
“GarageBand on iPad has been a big hit and we think customers will love using it on their iPhone or iPod touch,” said Philip Schiller, Apple’s senior vice president of Worldwide Product Marketing.
“The innovative Multi-Touch interface combined with Smart Instruments makes it easy to create great sounding music, even if you’ve never studied music or played an instrument before.”
GarageBand 1.1 for iPad, iPhone and iPod touch is available on the App Store for £2.99 to new users, or as a free update for existing GarageBand for iPad customers.