Easily create biometric passport photos with your iPhone. They comply with the official requirements in Europe and can be used for official ID cards or (Schengen) visa.
The app already gives out the passport photos in the 4x6 photo format. For just €2.49, you can save your passport photo in the Photos app and then simply print it out at home or in a drugstore. The photos automatically have the size required by the authorities. This not only saves you a trip to the photographer, it also saves you money.