Calculator Using MIT App Inventor

App Inventor is a visual, blocks-based programming language and online platform for creating mobile apps.It is possible to create a calculator application using App Inventor. To do this, you would first need to design the user interface of the calculator using the built-in components such as Buttons and TextBoxes.In this tutorial we will create a calculator application with App Inventor that does the following 4 operations: sum (+), product (*), subtraction (-) and division (/).

Here is the calculator program in the Blocks space of the App Inventor.
It is a simple program which you can make with MIT App inventor.
Hope you have fun designing your own app. You can even publish it in Google Play Store if you have a Google Developers Account.