Calculator is a free, ad-free, and easy-to-use Android app developed by Bryan Liu in the Utilities & Tools category. As its name suggests, this app performs basic calculations such as addition, subtraction, multiplication, and division. It is a simple calculator that is perfect for everyday use.

One of the best features of this app is its ability to perform tax calculations. For example, if you want to add a 13% tax to a $100 item, all you have to do is input 100 x 13% and the app will give you the result, which is 113. The app also includes a feature that allows you to swipe on the display to delete a number, which makes it easy to correct any mistakes.

However, it is important to note that this app is not compatible with tablets. Overall, Calculator is a great app for anyone who needs a basic calculator that is easy to use and free of ads.