I have them installed in order to test it on my fire phone via detours. Unfortunately I can not due to the fact that Wacom has not approved for use with Amazon devices, not make in-app purchases. Therefore, I draw from a star.
I would hope that the app will be released for Kindle devices.
I can create any number of instances of a notebook called thinkers and also equip them with different colored envelopes. All other notebooks are locked and can also be enabled only via in-app purchase. As pin forms there is a kind pen and marker type. All other pin forms can also be enabled via in-app purchase.
With my Bamboo Stylus Solo CS-100W input works quite well. But I think that writing with a more significant Stylus such as the CS-600CS easier because the tip would then not obscured the writing.
In my opinion there are better alternatives. For sketching and painting I personally Autodesk SketchBook Pro and better for notes, I use Evernote. Therefore, I can unfortunately not bring here to forgive more than 3 stars.