Useless app... First AR camera work badly then ask for a small paper with gribouillie on it BUT IT DONT RECOGNIZE IT ive tried multiple time still refuse it. You have to draw from height i understand but impossible to change the size or where on you sheet you want your draw !!! The phone have to be set between your arm it is the only place working wich make drawing impossible bc you have to be carefull to not touch or move your phone by accident if you dont want to start over start over