A free app for Android, by Mr Duy.

This is a free scientific calculator app, you can do lots of calculations such as algebra, trigonometric, etc. This app is a handy tool that provides you with many functions.

It’s a very simple calculator, you can use it easily. There are many calculations that you can do, including simple additions, subtractions, multiplications, and divisions.

The app is very easy to use, even for people who don’t know how to use a calculator.

It has an advanced scientific calculator that provides lots of functions. It can calculate the area of a circle, the distance between two points, the volume of a sphere, the surface area of a rectangle, the volume of a cube, and the length of a line.

It has a very simple user interface, it’s easy to use and it’s very intuitive.

The app is designed to be used in schools and universities.