At present Body Charts are best done on a computer in my opinion. However the only reason for this is I have not found a simple iPad drawing App which will allow a Body Chart to be imported, drawn on, and then Cut and Pasted into the Body Chart area. I have found Apps which will copy into Dropbox or email a drawing and then this can be cut and pasted but I think this is a bit clunky. When I find a simple App which allows direct cut and paste I will let you know.