Circle Calculator is a free Android application developed by JRF Software under the category of Business & Productivity. As the name suggests, this app is designed to calculate the radius, diameter, perimeter, and area of a circle. It is a simple tool that can be used to quickly and accurately determine the measurements of a circle.

The app offers four options to calculate the circle measurements: radius, diameter, perimeter, and area. Once a user inputs the data, the app shows the other three measurements of the circle. The interface is user-friendly and straightforward, making it easy for anyone to use. Overall, Circle Calculator is a useful tool for anyone who needs to calculate circle measurements on a regular basis.