I love this app and even use it to draw with, but please PLEASE fix the bug in the draw section of the editing software in which I hit the undo button to fix a minor mistake and instead of working like it does 98 percent of the time, it completely and irreversibly undoes my entire several hour process of drawing. If and when this gets fixed I'll give a five star rating, but I cannot take one more time losing hours of work and being helplessly unable to get it back.