Pro Calculator в Android Market

Pro Calculator (v. 1.5) Разработано UtopicSoft

A powerful scientific calculator.
Very easy to use!
**ON USER REQUEST, Variables are now saved! **

Its many features include:
* Basic math operations
* Possibility to use previous result in current operation
* Variables: you can assign variables with a value and then reuse them in your operations!
* Trigonometric functions
* Possibility to switch from degrees to radians
* Classic design
* Haptic feedback

Suggestions are welcome!