Interactive Conversion

This app can be helpful for anyone who wants to do unit conversions.
It is very easy to use and has a memo if you want to check the results.
For now the topics are:
"MATHEMATICAL CONSTANTS",
"PHYSICAL CONSTANTS",
"ENERGY CONVERSION",
"MASS CONVERSION",
"VOLUME CONVERSION",
"AREA CONVERSION",
"LENGTH CONVERSION",
"SCIENTIFIC CALCULATOR",
"DEGREES-RADIANS CONVERSION",
"FORCE CONVERSION",
"POWER CONVERSION",
"PRESSURE CONVERSION",
"TIME CONVERSION"