CalcTastic Scientific Calculator is a feature-rich scientific calculator with years of refinement and thousands of satisfied users. Choose from 5 different themes, a configurable display and your choice of operation, Algebraic or RPN. CalcTastic Scientific Calculator is FREE but comes with many great features including a Unit Converter, Fractions, Complex Numbers, Advanced Statistics, History & Memory Registers and a full-online Help Section. If you find CalcTastic Scientific Calculator useful, consider the PLUS version ($1 USD). The PLUS version also includes Polar-Form Complex Numbers, Landscape Support, 7 Additional Themes and a Full-Featured Programmers Calculator. -------------- GENERAL - Algebraic, Sequential or RPN input methods - Hybrid Prefix and Postfix notation. - Expression or Stack Display - Expression History with 20 records - Calculator Stack with 50 registers - Memory with 10 registers - 5 high-quality themes - Copy and Paste - Configurable numeric display (decimal point and digit grouping) - Intuitive long-click feature removes the need to press SHIFT - Easier to use than an HP 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 Precision from 0 - 12 digits - Table of 44 Physical Constants - 289 different conversion units across 18 categories - Trig functions 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 (not integer limited) - Combinations and Permutations - Random Number Generator - 15 Single-Variable Statistics commands operate 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</br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br>