GeoFeed

Have you ever wondered where a license plate comes from? GeoFeed can tell you and even provides links to relevant Wikipedia articles for more information. The best part is that the app recognizes all license plates even when you're offline (although an internet connection is required for the map display). If you frequently search for license plates, you can collect them directly and see how many you've already seen from a particular German state (currently for Germany and Austria) or another EU country. Even more unusual license plates like "0-1", "X", "Y", or "BD-16" are included in the app. For example, to find the region of France, you enter "F:42".