CalcTastic Scientific Calculator is a high-precision, feature-rich scientific calculator with years of refinement and 1000's of happy customers. Choose from 5 different themes, a configurable show and your alternative of operation, Algebraic or RPN.

CalcTastic Scientific Calculator is FREE but comes with many great options together with a Unit Converter, Fractions, Complex Numbers, Advanced Statistics, History Memory Registers and a full-online Help Section.

If you find CalcTastic Scientific Calculator helpful, consider the PLUS version ($1 USD). The PLUS model additionally contains Polar-Form Complex Numbers, 7 Additional Themes and a Full-Featured Programmers Calculator.

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GENERAL

- High Internal Precision

- Algebraic (Prefix or Postfix) or RPN Calculator Modes

- Expression or Stack Display

- Expression History with 20 Records

- Calculator Stack with 20-50 Registers

- Memory with 10 Registers

- 5 High-Quality Themes

- Copy and Paste

- Configurable Numeric Display (Decimal and Grouping)

- Intuitive long-click function removes the need to press SHIFT

- Easier to use than conventional Casio or HP calculators (11C / 15C)

SCIENTIFIC

- Rectangular Form Complex Number Support

- Real, Imaginary, Magnitude, Argument and Conjugate functions

- Fractions and Fraction Calculations

- Convert Decimals to Fractions

- Degree, Minute, Second Support

- Standard, Scientific, Engineering and Fixed Decimal Notations

- Configurable Display Precision from 0 - 12 digits

- Table of forty four Physical Constants

- 289 completely different conversion models throughout 18 categories

- Trig features in Degrees, Radians or Grads

- Hyperbolic Trig functions

- Natural and Base-10 Logarithms

- Percent and Delta Percentage

- Remainder, Absolute, Ceiling and Floor operations

STATISTICAL

- Factorial

- Combinations and Permutations

- Random Number Generator

- 15 Single-Variable Statistics instructions function on all stack entries

- Quantity, Min, Max, Range, Sum, Median

- Arithmetic Mean, Geometric Mean, Mean Squared

- Sum Squared, Sum of Squares of Variance

- Sample Variance, Sample Standard Deviation

- Population Variance, Population Standard Deviation