Comparison

Statistics Calculator++ vs Standard Deviation

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Statistics Calculator++

Perform advanced statistical analysis, including regression and probability distributions, with ease. Visualize data through plots and tables, and save or import datasets from spreadsheets. Offers a wide range of calculations beyond core statistics.

Highlights
  • Data entry and analysis table
  • Box and whisker plots and histograms
  • Linear, logarithmic, exponential, power, quadratic regressions
  • Save and import data from Excel/Numbers
  • Normal, t, Chi-Squared, F, Binomial, Poisson distributions
  • Confidence intervals and hypothesis tests
  • Fraction manipulation, angle conversions, solvers
Features
Currently charting
Read full description

Simplify your statistics with Statistics Calculator++ Perform powerful statistical analysis without needing a manual. Enter your data easily using "Add X," "Add Y," and "Add Z" buttons, and let Statistics Calculator++ handle the rest. Analyze results in a clear table, including sum, mean, standard deviation, quartiles, and more. Visualize your data with box and whisker plots and histograms. Powerful regression analysis: Choose from linear, logarithmic, exponential, power, and quadratic regressions. The intuitive interface simplifies selecting models and calculating predictions for x and y values. View residuals, residual sum of squares, and how the regression model fits your data in a graph. Save and import data with ease: Store multiple data lists and use them in calculations effortlessly. Import data directly from Microsoft Excel or Apple Numbers. Plus, your data is always saved within the app, so you never lose it. More than just statistics: Probability distributions: Normal, Student's t, Chi-Squared, F, Binomial, Poisson, Geometric, Beta, and Gamma. Confidence intervals and hypothesis tests: Step-by-step explanations for common statistical tests. Advanced calculations: Fraction manipulation, angle conversions, permutation/combination, LCM/GCD, prime factorization, quadratic solver, system of linear equations solver, rectangular/polar conversions, dice rolling. Statistics Calculator++ is a powerful and user-friendly tool for: Students Scientists Engineers Anyone who needs statistical analysis Download Statistics Calculator++ today and experience the simplicity of powerful statistics!

About

Standard Deviation

Easily calculate standard deviation with this iOS app. Enter your data values, choose between sample or population calculations, and get step-by-step results instantly. It offers a unique and attractive design for a seamless user experience.

Highlights
  • Calculate sample and population standard deviation
  • Enter comma-separated data values
  • View step-by-step solutions
  • Calculate mean, deviation, and variance
  • Unique and attractive design
  • Reset function for new data
Read full description

SD calculator is an iOS application developed for the calculation of standard deviation problems. It includes entering data values and selecting the type of standard deviation i.e. sample or population. Features of standard deviation calculator Design The design of this application is unique and its style and theme are attractive. This app is designed to top all the other apps out there in the design department. Input field The input field is easy to use to enter data and get the result. Simply, add the comma-separated values and choose the type of standard deviation. Multiple options There are multiple options available in this application as you can get the mean, sample standard deviation, population standard deviation, deviation (difference of data values from the mean), square of deviation, sample variance, and population variance. Results The step-by-step solution will be provided just after hitting the calculate button for the sample and population data. This will help you to ease up the lengthy and time-consuming calculation in a fraction of a second. How to use a standard deviation calculator? This application is easy to use, but just in case you need a guide, here it is. • First of all, enter the comma-separated values into the input box. • Select the type of the standard deviation i.e. sample or population. • Press the calculate button. • The step-by-step result will show just after pressing the calculate button • Hit the reset button to enter new data.

Screenshots

Statistics Calculator++4 screens
Standard Deviation4 screens

Verdict

The call

The clearest difference is price: Standard Deviation at Free against Statistics Calculator++'s $0.99. Standard Deviation also leads on device support (4 vs 2) and iOS requirement (13.0 vs 15.0). Statistics Calculator++'s advantage is rating (4.1 vs 1.0) and ratings volume (309 vs 1). On ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Standard Deviation is free to download; Statistics Calculator++ costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Statistics Calculator++ holds the better App Store score, 4.1 against 1.0. That said, the two scores are not equally well evidenced: Statistics Calculator++ has 309 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Statistics Calculator++ ships an update every 3 weeks, Standard Deviation every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 4 level
Statistics Calculator++ versus Standard Deviation: the parameters behind the verdict, then further details
ParameterStatistics Calculator++Standard Deviation
Price$0.99Free — better
Rating4.1 (309 ratings) — better1.0 (1 ratings)
Positive reviews62.5% of reviews—
Number of ratings309 — better1
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#135 — better—
DevicesiPhone, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.013.0 — better
Further details — not scored
Size4 MB21 MB
Age rating4+4+
DeveloperDogaheAhmad Sattar

Bugs and requests

Statistics Calculator++

Reported bugs

6 issues
  • App freezes after brief use
  • Statistics section won't open
  • Incompatibility with iOS 7
  • Random number generator produces predetermined sequences
  • Landscape/portrait mode switching issues
Show 1 more
  • Missing advertised features (nCr function)

Requested features

10 requests
  • User manual or tutorial documentation
  • Ability to input custom quantiles and critical values
  • Support for Z-score input in normal distribution
  • Streamlined data clearing process
  • Quadratic and advanced regression options
Show 5 more
  • Graphing for all input/output scenarios
  • Direct proportion input without requiring trial counts
  • Improved random number generator with proper seeding
  • Plotting of regression models
  • Two-sided interval calculations for alpha values

Standard Deviation

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Statistics Calculator++

No in-app purchases

None

Standard Deviation

No in-app purchases

Questions

Is Statistics Calculator++ free?
Statistics Calculator++ costs $0.99, with no in-app purchases.
Is Standard Deviation free?
Standard Deviation is free to download, with no in-app purchases.
Which has better reviews, Statistics Calculator++ or Standard Deviation?
Statistics Calculator++ is rated higher. Statistics Calculator++ averages 4.1 out of 5 from 309 ratings, while Standard Deviation averages 1.0 from 1 ratings.
Do Statistics Calculator++ or Standard Deviation have ads?
Neither Statistics Calculator++ nor Standard Deviation shows ads.
Which is updated more often, Statistics Calculator++ or Standard Deviation?
Statistics Calculator++ ships an update every 3 weeks, and Standard Deviation every 2 months. Most recently, Statistics Calculator++ was updated on November 1, 2026 and Standard Deviation on November 3, 2026.

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