VividTracker brings Amiga Protracker to iOS as a Universal app! Besides bringing the retro-factor, this has all the iOS amenities like Audiobus and AudioCopy.
VividTracker iTunes Description:
VividTracker is an Amiga Protracker compatible music maker app. You can load, save, edit, and create new ProTracker modules.
- Compatible with Protracker modules created on the Amiga
- Supports AudioCopy 2: Import samples from other apps
- Supports Audiobus: VividTracker can send audio to other apps like GarageBand and Cubasis through Audiobus.
- Great sample editor, where you can easily set loop points, cut and paste samples, etc.
- Dropbox sync folder support
- AutoChord feature
- Cut, Copy and Paste rows, tracks or full patterns
- Load modules from other apps such as Mail or Safari
- Open modules in other apps from VividTracker
- Email modules
- MIDI in support
There are a bunch of tutorial videos for this on the developer's YouTube channel. Here he shows you how to sample form Korg's Gadget, and then slice it up in VividTracker.