This calculator app is a useful tool for anyone who needs to perform basic calculations. It has a simple and intuitive interface that resembles traditional electronic calculators. In addition to basic arithmetic operations, the app offers several key features that make it more versatile. For example, you can use the % key to add or subtract percentages, the TAX+ and TAX- keys to calculate VAT or sales tax, and the COST, SELL, and MARGIN keys to calculate profit. The app also includes memory functions and a calculation history.

One of the advantages of this calculator app is its ease of use. The buttons are large and clearly labeled, making it easy to enter numbers and perform calculations. The app also includes a dark theme, which can be easier on the eyes in low-light conditions. Another useful feature is the ability to choose between a beep or vibration when pressing keys.

The app is available for free, but there is also a premium version that offers an ad-free experience. The help screen provides instructions on how to use the function keys. It is important to note that this calculator app is not associated with Casio Computer Co., Ltd. or any other company.