The 計算機 app offers a versatile and user-friendly calculator experience on Android devices. Key features include a toggle between standard and billion mode for easier number input, allowing users to handle large figures effortlessly. Additionally, the app displays calculation history, enabling users to review previous calculations and delete them as needed for better organization.

This calculator also supports various unit conversions, including currency, length, area, and temperature. Users can perform currency conversions across 24 different currencies, with exchange rates updated periodically. Length conversions cover units such as meters and miles, while area conversions include square meters and acres. Temperature conversions are also available, accommodating Celsius, Fahrenheit, and absolute temperature scales.