User manual

Copy a calculation result to clipboard. Long press the results and it will be
copied to the clipboard. You can click to continue calculating or click if
you want to clear everything and start a new one.
Use the scientific calculator. Rotate your phone to landscape orientation.
New functions in Calculator. There are a lot of important functions that has been
added. Click at the top right portion of your calculator then select a function
that you would like to use.