麻雀収支日記 is a simple diary app that allows you to easily manage your earnings from playing Mahjong.

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With this app, you can record your earnings, tags, number of games played, and ratings in your diary. You can also view a list of your diaries and a bar graph of your earnings at the same time. The app displays the average rating for each month and provides a clear and easy-to-understand ranking in the form of a pie chart. Additionally, the app supports yearly aggregation with its aggregation feature. You can also perform tag-based aggregation for a specific year.

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The app allows you to change the theme color and select colors for your tags, making it easy to navigate and visually appealing. It also includes other useful features to enhance your Mahjong experience.