You can download the update directly on your device through the Apple App Store or by using the following link
Use Multi-Touch gestures to play a piano, organ, guitar, and drums. They sound and play like their counterparts, but let you do things you could never do on a real instrument. Enjoy Smart Instruments that make you sound like a pro — even if you’ve never played a note before. Plug an electric guitar into your iPad, iPhone, or iPod touch and play through classic amps and stompbox effects.* Use a Touch Instrument, a built-in microphone, or a guitar and instantly record a performance. GarageBand now takes song creation to the next level with support for up to 32 tracks.** Get even more sounds for GarageBand with a one-time in-app purchase or record popular third-party music apps using Inter-App Audio in iOS 7. And share your song using email, Facebook, YouTube, SoundCloud, or AirDrop for iOS.
Garageband for iOS version 2.0 has the following new features and improvements:
- All-new streamlined design
- Create a song with up to 32 tracks* using Touch Instruments, audio recordings, and loops
- Record compatible Third-Party music apps using Inter-App Audio in iOS 7
- Drag and drop audio recordings to create Sampler instruments
- Support for AirDrop in iOS 7
- 64-bit support
* Requires devices with the A7 chip.16 tracks available on iPhone 5c, iPhone 5, iPhone 4s, iPad (4th generation), iPad (3rd generation), iPad 2, iPad mini, and iPod touch (5th generation)