The Micromax Informatics Calculator app, available on Android, is a free utility and tool program that performs basic arithmetic operations and engineering calculations. The app boasts an easy-to-use interface with an engineering calculator icon that opens the engineering calculator, and a calculation history icon to check the calculation history. Closing the calculation history panel is as easy as tapping the keypad icon.

One of the most useful features of this app is the ability to use previously inputted formulas. Users can simply tap the formula they need from the calculation history. This app is perfect for anyone who needs a reliable and simple calculator for everyday use. The only downside to this app is the lack of additional features and subcategories.

Overall, the Micromax Informatics Calculator app is an excellent choice for those looking for an easy-to-use calculator app that performs basic arithmetic operations and engineering calculations.