I’m from China.
I can smoothly use the app,I think it is wonderful.
I have a suggestion to let the app have ability to insert image.
And can make all or selected shape alignment by set even distance, and can decide which manner to do that ,lift alignment,center alignment ,or right alignment. Or in vertical in top middle or bottom.
And Selected group shape can change their color,text font ,size,,line color, can change line shape line width . It can make part of user want brighrful.
I hope the app can multi-screen.