らくらく勤怠 is a free business and productivity application available on the Android platform. This app allows users to manage their work attendance and keep track of their working hours, overtime, and regular and late-night work hours on a daily, monthly, and yearly basis. It also provides features for managing daily and monthly salary payments, allowances, and deductions. Users can switch between different display options such as time format, monetary display, detailed view, pattern view, memo view, and lunar calendar view. The app also offers backup functionality, allowing users to export their attendance data to Excel files and import data from backup files. Additionally, users can analyze their work hours and income information through monthly and yearly graphs, comparing them with previous months and years.