"농약비료 계산기" is a user-friendly Android app designed to assist agricultural professionals in calculating the correct amounts of pesticides and fertilizers. Developed in line with the Pesticide Allowable Substances Management System (PLS) implemented in January 2019, this app allows users to quickly determine the 'diluted water' and 'required amount' of pesticides. By simply entering values and pressing the blue Calculate button, users can efficiently apply chemical fertilizers, ensuring compliance with safety guidelines. Additionally, it provides links to important resources and information regarding pesticide safety and crop protection.