Bad design compared with that of iPad edition

I love this app in iPad. Almost every detail is vividly shown.
But when I began to use this in Macbook, I discovered that I cannot move the skeleton as I do in the iPad edition.
When I used two finger move around and tried to move the skeleton,I failed.
Suck! It’s just magnified or shrink.
Why don’t you just make the Macbook edition looks like the iPad edition?

Realredpig about Essential Skeleton 4, v3.0