Stamp Mag is a free application that serves as the digital extension of Britain's longest-running independent philatelic magazine, offering a wealth of news, features, and opinions for collectors of all levels. Users can access lively news pages, in-depth articles, and a dedicated section for upcoming British stamp issues, published in twelve issues per year. The app also provides options for purchasing current and back issues, along with subscription plans for ongoing access.

The app includes features such as account registration via Pocketmags, ensuring users can recover their purchases across devices. It is recommended to initially load the app in a Wi-Fi environment to facilitate the retrieval of issue data. Subscription management options are available within the app, allowing users to manage auto-renewal settings easily. For any issues or inquiries, users can access help and FAQs in-app or through the Pocketmags website.