2021-07-03 00:00:00 Cool Notes 3D is a note taking app with a difference. Simple mode: Open the app. Tap a note, change the text. You don't have to get any more complicated than this if you don't want to. This app can be used to make unlimited notes in a 3D environment. Create your personal mind map and structure your thoughts in to a mind palace that you can explore in the palm of your hand.