Scientific Calculator

4.5
1.67K reviews
100K+
Downloads
Content rating
Everyone
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About this app

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 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 up to 50 Stack Registers
- A Basic Mode with all the Essentials
- Calculation History with 50 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
- 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
- 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
Updated on
Sep 2, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

4.5
1.58K reviews
Javier Hernandez
November 25, 2023
Great calculator. Though i do have a small nitpick because I have to do a ton of regular math and it would be great if the mem buttons could be removed so that there could be more screen and if the equations on the left and solutions on the right weren't in this inefficient double stack format but a single stack so I wouldn't have to scroll so much. I also noticed there's a 50 limit when some calcs have more. I sometimes go far back to check and see it's gone. Unless these are pro features.
Did you find this helpful?
CalcTastic
January 5, 2024
Thanks for the feedback and review. 50 calculations is the max history but I'll consider increasing that in a future release. - Sam
Bruce Wrigleys Gumchewz
May 10, 2022
What can I say? A scientific calculator that works well. Buttons are responsive. Most used functions are visible, and those that aren't, can be easily accessed. The layout is also easy on the eyes and keys are easy to read. The history feature is nice to see, eapecially if you need to look at old calculations you've done. Also, I like how you can adjust the haptic feedback in small amounts. This sure beats Googles ugly, clunky and bare bones calculator app. Oh man that thing's an eyesore.
10 people found this review helpful
Did you find this helpful?
CalcTastic
August 31, 2023
Bruce, Thanks for the awesome review and 5 stars! Much appreciated! - Sam
eatanAustralopith _
July 23, 2022
I've been using this calculator for years. It's the only one I use anymore. Honestly can't find any fault with it. Totally free, ad free, the most comprehensive set of features I've found in any free calc app. All I will ever need for astrophysical calculations. Just great. 1,561 reviews a grand total of 2 critical. Need I say more?
4 people found this review helpful
Did you find this helpful?
CalcTastic
August 31, 2023
Thanks for the awesome review and 5 stars!

What's new

Android's best all-around calculator just got better! Equations can now be edited, and results are calculated in real-time. Plus, lots of other improvements.