I just urchased the new iPad app and have tried to use it on my iPad Pro. Not sure this was worth the $19.99 investment as the app is very unstable and crashes often. Biggest issues are:
1) Opening images from Apple photo. I have thousands of images, if you scroll through them too fast the app just locks up and will not respond to any commands. After about sixty seconds it will simply close down.
2) Trying to watch the tutorial videos from the home screen does the same thing. If you click on a video, the screen goes black. After about a minute the app simply closes.