"簡単操作の売上メモ" is a simple app designed to help users track their daily sales effortlessly. The main features include easy input of sales, income, fees, and expenses. Users can visualize data with a pie chart showing categories, total sales, and profits per category. The app also displays cumulative and changing graphs by category, monthly summaries, yearly bar graphs, and allows users to set monthly profit goals. Customization options include changing theme colors. The app offers a premium plan with features like year-over-year comparison, different cell types viewing, filters, and ad removal. Users can check pricing details and manage subscriptions within the app. Automatic billing occurs via the App Store, and users can cancel subscriptions through device settings. The developer emphasizes that they are not liable for damages resulting from app usage and provides links to their terms of service and privacy policy for reference.