This is the worst app I've ever experienced, no matter how straight you leave your phone, it's always gonna move, it's impossible to get the app to recognize the paper, i payed 10$ to get the pro version so i can at least get a "better experience" but it was a mess, impossible to do anything without it just glitching, i don't know you expect me to use something like this If it's impossible to use, i already got my refund + uninstalled the app, i can't believe people actually think this is good.