Base Calculator and Converter is an Android application developed by Volnoor that enables you to perform arithmetic operations in various numeral systems. You can perform operations in binary, octal, decimal, and hexadecimal numeral systems, even with floating-point numbers. The app supports common arithmetic operations such as addition, subtraction, multiplication, division, power, and modulus. You can also use round brackets to group terms.

The app comes with a built-in keyboard that can be hidden if you prefer to use your system keyboard. You can also select the precision of your calculations, and the app saves a history of your operations. The user interface is intuitive and user-friendly, making it easy to use for anyone.

Overall, Base Calculator and Converter is an excellent utility tool for anyone who needs to perform arithmetic operations in different numeral systems. It is available for free on the Google Play Store.