Which iPhones does it work on?
Paint & Fold needs an iPhone Duo. The app is built around closing the phone shut, so it does not run on iPhones that do not fold.
How do I make a print?
Open your iPhone Duo flat and paint on the inside screen with your fingers. Fold the phone fully shut, wait a moment, then open it again. Your painting will be mirrored across the hinge.
I folded the phone and nothing happened
Make sure the phone closes all the way before you open it again. A half fold does not count as a press. If it still does not work, close the app from the app switcher, open it again and try a new painting.
Does the app collect any of my data?
No. See the privacy page for the detail.
Still stuck?
Email moc.eivadsemaj@semaj and say what you were doing when it went wrong and which version of iOS you are on. A screenshot helps.