Circle Calculator is a free Android app developed by Horitech that enables users to make quick and accurate calculations of circle values. The app is designed to calculate the radius, diameter, circumference, or area of a circle given valid known values. It is accurate to 16 decimal places, making it an excellent tool for precise calculations. The app's interface is simple, minimalistic, and user-friendly, making it easy to use for anyone.

Whether you are a student, a professional, or someone who needs to make circle calculations quickly, Circle Calculator is the perfect tool for you. With its simple interface, you can easily enter the values you know, and the app will instantly calculate the unknown value for you. This app is an excellent addition to any utility or tool collection, and its accuracy and ease of use make it a must-have for anyone who needs to make circle calculations.