리드넘버 is a comprehensive app designed for small business owners in South Korea, offering essential tools for efficient tax and financial management. This free application provides users with real-time information on value-added tax (VAT) payments, enabling them to prepare for upcoming obligations while avoiding excessive fees. It consolidates various financial data, including sales and deposits from multiple sources such as delivery apps and online stores, into one accessible platform.

The app also features a user-friendly salary management system, where users can easily input payroll data for regular employees, freelancers, and temporary workers. With its calendar view for sales and deposit tracking, 리드넘버 helps business owners visualize their financial activities effectively. Additionally, the app allows seamless integration with banking, credit card services, and e-commerce platforms, making tax management straightforward and efficient.