간단 세금 계산기 - 급여 4대보험 부가세 is an iPhone app that allows users to easily calculate taxes and insurance related to salary and value-added tax. The app provides the ability to save the calculated details for future reference.

For value-added tax calculations, the app includes options for both general taxation and simplified taxation. It also includes calculations for required purchase of items in the restaurant industry.

When it comes to salary calculations, the app offers options for general salary, part-time work, daily wages, and freelancers (3.3% tax rate). Users can calculate monthly salary, daily wages, and hourly wages, and can also include additional calculations for holiday pay. The app covers various taxes and insurance contributions such as income tax, local tax, national pension, health insurance, long-term care insurance, and employment insurance.