Notion Notation App For iPad and iPhone November 3, 2015 by iPad Loops, Music Production Apps, And Hardware 0 Notion is a notation editor and playback tool for your iPad, iPhone and iPod Touch, (any iOS8 compatible device) giving you the convenience of an easy-to-use music creation tool right at your... Composition Apps, Scoring Apps ipad app, iphone app, notation app, notion, Notion Notation App For iPad and iPhone, scoring app.