The telephone card

A convenient application has been developed, a guide to current telephone numbers. With the possibility to be used as a advertising site, many options for placing advertising content are implemented. The application works with the central base of MySQL. The application after synchronization with the server, works offline (internet is only needed to update the guide and advertising content).

The URL indicates my name and surname Roman kravchuka
https://play.google.com/store/apps/details?id=com.romankravchukapp.roma.telephonedirectory