The くみあいアプリ is a social networking application designed for iPhone users, facilitating communication among team members. It features a bulletin board for essential announcements, equipped with push notifications to ensure important updates reach all members promptly. The app encourages team engagement through a 'mini-voting' feature, allowing users to gather opinions via simple multiple-choice surveys, fostering a collaborative environment.

In addition to general communication, the app supports private interactions among designated members, ensuring confidentiality for discussions not visible to the broader team. Team invitations are streamlined with options to use QR codes or URLs for easy member registration. Furthermore, users can access UNION SALON, a learning platform providing video content on democratic operations and union activities, enhancing knowledge and skills within the team.