Cek Nopol Jogja is a free Android application developed by diCek that provides detailed information about vehicles registered in Yogyakarta with AB license plates. To access the information, users need to register with their NIK (ID number) and KK (family card number) issued by Disdukcapil Kota Yogyakarta. The registration process ensures that only validated users can access the information, preventing any misuse of the application.

Once registered, users can easily retrieve information about a vehicle by entering its license plate number and the last five digits of its chassis number. The application also allows users to view their search history. In case the server is offline, the auto-email feature will notify users once the server is back online and the information is available.

Overall, Cek Nopol Jogja is a useful tool for anyone who needs to check vehicle information in Yogyakarta. However, users should keep in mind that the information provided is only available for AB license plates registered in Yogyakarta, and the server's availability may be limited at times.