RealCalc Scientific Calculator is one of Android's most popular scientific calculators. It has over 20 million downloads and more than 100,000 5* reviews. RealCalc is designed to look and operate exactly like a real hand-held calculator. It has all the standard scientific functions plus history, memories, unit conversions and constants. You can choose from a number of display styles and formats. It also supports binary, octal and hexadecimal calculations and has an optional RPN mode. RealCalc i