Chord NOTE is a Songwriter’s assistant tool.
It assists in finding the right chords to match a melody or musical phrase.
And it has great Chord Progression function and Scale library.

Chord NOTE supports Slide Over and Split View on iPad, and provides the appropriate display and operation for iPhone and iPad.

You wrote new melody came into your mind, but you could not apply some chords for your melody…
At a time like this, you can get guides to find some chords that match your melody by Chord NOTE.

If you have composed some songs already, you know almost melody and chord have some same notes. Because the main part of melody is made up of constituent notes of chord in most cases.
In the same way, you’ll be able to find Key to match your melody by Chord NOTE.

So Chord NOTE is very useful for finding the chord and key.

If you record your singing melody, you can display the pitch of your voice.
And you can sketch your songs by Chord Progression function.
Chord Progression function will provide numerous features for you.

Chord NOTE supports widening the imagination of your wings for real composer.

Advanced Option :
Chord NOTE works fine without this option. However, when you’ll buy this low price add-on, you can use more Chords and Scales. It will provide a complete set usually.

You can read full function description at support page.
http://therootage.com/iphone/chord-note-en/