• Set Instrumental Transposition in preferences, for transposing instruments such as sax, clarinet, and trumpet. 
• Preferences now have a help page.

You can now change the key of the cadence played in HEAR mode. This adds a fun challenge and can be set in preferences.

Major update!
• Much improved audio management — sounds don't clip anymore.
• New preferences panel where you can set your pitch standard, i.e. choose the frequency of middle A. Presets for 415, 432, 440, 442 and 443, all fine-tunable.
• Choose from 7 different sound options: Piano, Choir, Strings, Nylon-String Guitar, Steel-String Guitar, 12-String Guitar, or Sine Wave. In Preferences.
• Arpeggiate chords: you can now choose to arpeggiate chords as much as you'd like, from 0 to 200ms between notes. In Preferences.

Updated for new iOS versions, including bug fix for speaking note names in SING mode.

Update for new iOS versions

Bug fix.