A free app for Android, by Spooky House Studios UG haftungsbeschraenkt.

A perfect calculator for your pocket, Progressbar Calculator is a free application. With a friendly user interface, it is extremely easy to use, fast, and with many advanced functions. 

The calculator is perfect for the following uses:

• Calculate and find the value of any mathematical expression. 
• Find the percentage of any value. 
• Find the square root of any number. 
• Calculate simple arithmetic, such as addition, subtraction, multiplication, and division. 
• Calculate with the most popular algorithms. 
• Save your results to a history. 
• Share your history with others.
• Set the display and backup options.
• Change the display options.
• Display your history.
• Send your history to a printer.

This app will be a perfect assistant for you.