Scientific Calculator with Fractions, Complex Numbers and RPN Support
4.55·1,889 reviews·100,000+ downloads
About Scientific Calculator
Scientific Calculator is a tools app developed by CalcTastic.
Download Statistics
Scientific Calculator has been downloaded 480 thousand times. In the last 30 days, the app was downloaded 5.3 thousand times.
User Ratings
Scientific Calculator is rated 4.55 out of 5 stars. The rating is based on 1.9 thousand ratings.
App Information
Scientific Calculator is FREE to download. The APK download size is 3.34 MB. The latest version available is 8.1.3. The last update was on September 14, 2025.
Technical Requirements
Scientific Calculator requires Android 9.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play June 2012.
Description
CalcTastic is a high-precision, 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 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 ($3.99 USD). The PLUS version also includes Polar-Form Complex Numbers, 7 Additional Themes and a Full-Featured Programmers Calculator.
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GENERAL - High Internal Precision - Two Algebraic Modes with Editable Equations - Two RPN Modes with Undo Support and up to 100 Stack Registers - A Basic Mode with all the Essentials - Calculation History with 100 Records - Memory with 10 Registers - 5 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 - 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 44 Physical Constants - Over 300 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
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Finding a free calculator that has 1/x, +/-, and DMS was impossible until now. My only issue is when the result is a negative number, I will select the +/- and a new line starts with a negative instead of turning the result into positive. I have not yet figured out how to start a new line using the result from the previous line as I have only used single line calculators... until now.
★★★★★Sam· Nov 22, 2025
Good feature set, high precision, and not only has RPN but takes it seriously. I'm impressed by the stat function - easiest to use of the several calculators I've tried lately.
★★★★★Piotr Ryczkowski· Nov 19, 2024
The only calc that allows easy scientific notation i.e. 5.1e3 input. Great overall in other aspects.
★★★★★Zeedijk Mike· Mar 25, 2025
I have only used this calculator for a few minutes, and I love it. Exactly what I was looking for. All the most used functions directly available and still no clutter. Easy to edit your calculations. Well done.
★★☆☆☆Vince D· Jan 3, 2024
EDIT 2024/1/3: Nice calculator. (1) Pressing 1/x should immediately return the value of 1/current answer or 1/current input, without any further input from the user. (2) The +/- button should always change the sign of whatever value is currently displayed, whether that value is the result of a calculation or user input. Pressing +/- should not trigger the start of a new line and a completely new calculation that starts with zero. These issues have not actually been addressed.
Google Play Rankings for Scientific Calculator
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Technologies used by Scientific Calculator
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