青色申告会 is an iPhone application developed by YTC PLUS Co. Ltd., available for free in the Business & Productivity category. To utilize this app, membership in the 青色申告会 App Participation Association is required. This app serves as a dedicated platform for members of the association, providing access to the latest updates and information.

The app offers various features such as a reservation system for appointments (not available in all branches), publication of the latest and past association newsletters, announcement of important news, a digital membership card with associated benefits, push notifications for updates from the association, and email newsletters for comprehensive information delivery.