While searching around on my new mobile phone, I stumbled upon Rollei Foto-App. It has some descriptive material in the iTunes entry (very little though). I am trying to locate the equivalent of a manual for the app. The app adds features to the built-in phone camera. Useful, I don't know. There is also an Android version available. https://itunes.apple.com/us/app/rollei-foto-app/id619693596?mt=8 John P.S. There is a worthwhile Rollei 35 app for the iPhone which has a lot of descriptive material. I originally loaded it on my iPod several years ago.