Ipad pro app for figure making?

Hey rats, I was wondering if anyone had any recommendations for ipad apps for figure making. Specifically, for making cartoon models, flow charts, and that kind of figure.

In the past I've used Illustrator, but it's a). pretty annoying because there's only one computer in my lab that has it and we have to share and b). drawing things using a mouse is difficult and tedious.

I happen to own an ipad pro with apple pencil, and it seems like it would be an ideal tool for making figures. However, I haven't found an app that is useful for this purpose- most I've found are geared toward sketching or note taking. Any recommendations/ideas?