Question: app to do photo collage?
Answer: Pic Collage. Compatibility: Android, iOS | Price: Free; $4.99/month ($35/year) for premium features. ...  Diptic. Compatibility: iOS | Price: $2.99; in-app purchases. ...  Moldiv. Compatibility: Android, iOS | Price: Free; $14.99 for all features. ...  PicPlayPost. ...  PicsArt. ...  PiZap. ...  Pic Stitch. ...  PhotoGrid.