Car Plates A-CH Free is a travel and navigation app available on Android devices. Developed by SpeedyMarks, this free app is a database of license plate signs from Austria and Switzerland. The app is a useful tool for anyone traveling through these countries, allowing them to search for codes, regions, and cantons, as well as filter by country.

The app also features a game for kids during long car trips, where they can collect different codes and see the number of marked codes on the icon badge. Users can choose between a light modern design and a dark traditional design. Although the app is in German, it can be used by anyone who is curious about license plates or traveling through Austria and Switzerland.

It's worth noting that this app is freeware and ad-supported.