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).

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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!

Used this app for years. Probably close to a decade. Even through being a physics major in college. Absolutely loved it. New update is terrible. Switched to a weird font trying to be aesthetic instead of a normal, highly legible font. And the new button layout/sizing is a downgrade- not as functional. Not sure why any changes were made. With that being said. Will continue to see if it grows on me- I owe it to this old friend. But really wish I could revert to previous version...

My go-to calculator for several years. Basic, scientific, and programmer layouts with algebraic and RPN modes. Tons of functionality. A big screen that helps you with more complex calculations. A huge stack - up to 50 deep - more than you could possibly ever use. All this is wrapped in your choice of terrific themes that make it a real pleasure to look at, too. Zero internet permissions! The only thing I would change is to put this gem in the hands of more people. It's a great calculator!

What's new

- Updated to cleaner, more legible fonts based on all your feedback.
- Clearing the screen (CLS) in algebraic modes, now only clears your on-screen visible history.
- Fullscreen options are now available per orientation.
- The Office theme has been fully re-imagined. The Ivory theme has been fully replaced by the Instrumental theme. Many other theme assets have been refreshed.
- Trig functions now obey the angle unit (DRG) when the result is complex.
- Updated constants to the 2022 CODATA.