公式コミュニティ攻略Jamジャム is an official app that allows users to easily access features related to the game without having to launch the game itself. It offers official strategy information based on in-game data, allowing players to enhance their gameplay. The app also provides a convenient way to check in-game announcements and chat with other players, with the option to receive chat message notifications. Additionally, users can interact with a community of players, ask questions, and recruit guild members. The app seamlessly integrates with the in-game chat, ensuring that messages sent through Jam are also received in the game chat. Users can post images and stickers, delete posts, and access push notifications and past chat logs. With its comprehensive features, Jam is a valuable companion for players looking to optimize their gaming experience.

The app is available for free and is compatible with iPhone 6s and above, running iOS 9.0 or later. It supports several games, including Unison League, Valkyrie Connect, Sangoku BASSA!!, and Shoujo Kageki Revue Starlight -Re LIVE-.