This update from Apple will improve the functionality of this app. No new features are included.

Minor changes

Updated interface

Various bug fixes.

Fixed broken metronome on iOS 9
Recording with metronome in 6/8 now works better

In-App Purchase for PLUS functionality
Bug fixes

Now compatible with iOS 6
Various bug fixes

Metronome with drum tracks, if you like playing with a beat!
Feedback - The app now helps you get better results by saying how the recording was understood!
Detail Level - Control the complexity of the notation with the new slider.
Various bug fixes.

Fixed microphone related issue which could result in empty recordings
Fixed notation cache issue

Improved music notation rendering
Bug Fixes

Editing collections
Tooltip help
Bug fixes

Collections
Featured songs
Localized help (Brazilian Portuguese, English, Japanese, Simplified Chinese, and Spanish)
Sharing is now working on iPhone 5S, iPad Air and iPad Mini (2nd generation)

Improved analysis
Editing functionality
Multiple sounds
ScoreCloud for collaboration and communication
Name change

Improved analysis
Improved help
Bug fix regarding Score Detail

Improved recording
Improved error handling