RealCalc Scientific Calculator, one of the most popular Android scientific calculators. It has more than 20 million downloads, and over 100,000 5-star reviews.
RealCalc was designed to operate and look exactly like a hand-held calculator. It includes all standard scientific functions, as well as history, memory, unit conversions, and constants. There are many display formats and styles available. You can also use it to calculate binary, octal, and hexadecimal numbers. There is an RPN mode as well. RealCalc is simple to use and comes with full support.
If you like RealCalc, the pro version RealCalc Plus has lots of extra features including fractions, degrees/minutes/seconds, customizable conversions and constants, landscape mode, a home-screen widget, a 12-digit display and greater internal precision. Further development can be supported by purchasing RealCalc Plus. Search for RealCalc Plus in the app or click the upgrade link.
The following features are available in the RealCalc Scientific Calculator:
* RPN or traditional algebraic operation
* Conversions of units
* Table of physical constants
* Percentages
* History of results
* 10 memories
* Binary, octal and hexadecimal can be enabled in Settings
* Trig functions in degrees. Radians. Grads.
* Fixed-point, engineering and scientific modes
* Standard font display, 7-segment or dot-matrix
* Configurable decimal point and digit grouping
* Support for external keyboards
* Full built-in help
RealCalc Plus includes all of these features plus:
* Fraction calculation and conversion to/from decimal
* Degrees/minutes/seconds calculations and conversion
* Landscape mode
* Homescreen widget now with RPN support
* 12-digit display
* Extended internal precision (32-digits)
* Conversions of units and constants that can be customized by the user
* New RPN styles (buffered entry, XYZT rolling pile)
* Multi-window support via drag and drop
