Income and expenses are displayed at a glance in a monthly book format and calendar. Income, expenses, and profit and loss are automatically aggregated monthly and yearly, so you can easily see the trend of changes in income, expenses, and income. By registering fixed income and fixed expenses that occur on a regular basis every month, you can conveniently manage it without missing it. It can be used for the purpose of business sales, purchase, and profit and loss management. It can also be used for personal account book purposes. It can be conveniently used in any other place where income and expenditure management is required.