I want to point out that there is an excellent existing iPad app from a small developer called Callipeg, that has most of the same feature set described here (m

I want to point out that there is an excellent existing iPad app from a small developer called Callipeg, that has most of the same feature set described here (maybe everything except the effects features) I've had a great experience animating in Callipeg with both cell animation and transform animation. It is true though that Procreate is the gold standard for drawing apps, and the drawing functionality in Callipeg isn't as polished- So I will be tempted to switch to this new app for animation, if they can match the drawing experience from the core Procreate product.