Pop Card Checker is a free Android application developed by Nexus (Tyne and Wear PTE), designed to help users access information about their Tyne and Wear Metro travel card, Concessionary Travel Pass (ENCTS), or any other recognized smart card using their NFC-enabled smartphone or tablet. This app is an excellent travel buddy that enables users to check their Metro season ticket's expiry date, valid zones, and start date without visiting a ticket machine.

The app is compatible with the majority of NFC-enabled mobile devices, making it accessible to many people. To use the app, users should turn on their mobile device's NFC function and Internet connection, place it on top of their Pop card, ENCTS pass, or U16 Pop card, and hold it steadily until the inquiry result shows. The app's interface is user-friendly, making it easy to navigate and use.