So you've written a melody but need the chords to go with it - then this is the iOS app that you need.

New in v4.3:

• Improved sound engine for Chord Progression.
• Playable metronome sound at Chord Progression.
• BugFix for some minor bugs.

New in v4.0:

• "Circle of 5th" picture now in Key Tab.
• New keyboard now shows chord consists of notes.
• You can now view guitar fingering form for selected Chord via Guitar Kit (other app).
• You can focus on similar chords by tapping "Similar" button.
• Automatically scroll to current chord.
• Display consisted notes for current chord.
• Various bugfix for Customize Chord view.
• Some minor design change.

New in v3.0:

• Efficiency improvements on the sound engine
• Fixed the m7b5 sound
• New Chord Progression functionality
• Easy Editing: You can copy or clone chords and you can also delete all chords at Chord Progression
• Easier Editing: You can transform chords into various forms like sus4, add9... at Chord Progression
• You can now specify Bass notes for your chords at Chord Progression
• Chord NOTE shows full Chords when limit key is off
• Easily see the notes on top of the keyboard
• New All in Chord rule, combined Triad & Seventh and even Substitute Chords.

New in v2.0.1:

• Fixed problem about displaying images for iOS 4.2

New in v2.0:

• Added Chord Progression function. You can memory some chords very easily.
• Display consisted notes for the chord at top keyboard.
• Display consisted notes for the key at top keyboard.