Scientific Calculator Plus

CalcTastic

About this app

CalcTastic Plus is a feature-rich calculator with years of refinement and exceptional user ratings. Choose from 12 different themes, a configurable display and your choice of operation, Algebraic or RPN.

CalcTastic Plus includes two fully-independent modes:

- A high-precision Scientific Calculator with Fractions, Complex Numbers, Physical Constants, a Unit Converter, Advanced Statistics, History & Memory Registers and a full-online Help Section.

- A full-featured Programmers Calculator with a dedicated Binary Display, support for Signed & Unsigned Integers (from 8-64 bits) as well as separate History & Memory Registers (viewable in binary, octal, decimal or hex).

--------------

GENERAL
- Two Algebraic Modes with Editable Equations
- Two RPN Modes with up to 50 Stack Registers
- A Basic Mode with all the Essentials
- Calculation History with 50 Records
- Memory with 10 Registers
- 12 High-Quality Themes
- Copy and Paste
- Configurable Numeric Display (Decimal and Grouping)
- Easier to use than many other Calculator Apps
- Quicker than locating your Casio & HP Calculator (11C / 15C)

SCIENTIFIC
- High Internal Precision
- Rectangular and Polar form Complex Number Support
- Real, Imaginary, Argument, Magnitude 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 44 Physical Constants
- 289 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
- Combinations and Permutations
- Random Number Generator
- 15 Single-Variable Statistics
- 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

PROGRAMMER
- Binary, Octal, Decimal and Hexadecimal
- History viewable in all Four Bases
- Convert between Bases
- Signed and Unsigned Integers (8, 16, 32 and 64-Bit)
- Cast between Integer Sizes
- Dedicated Binary-Bit Display (and Toggle) for all 64-Bits
- Bitwise Logic Operations AND, OR, XOR
- Bitwise Shift Operations
- Roll Left and Right
- Byte and Word Flipping
- Ones and Twos Complement - Native interpretation is Twos Complement
- Random Number Generator

Ratings and reviews

I'm just a lightweight and occasional user, but to me this the perfect app. It's simple to use, has a clean & straightforward format, and even has two choices of display. One display format is a basic 4-function arithmetical display & the other display format is a scientific display, with additional operations such as trigonometry and log functions, and other things I don't understand. There's even a units converter hidden in there, which I just noticed!