Comparison

Statistics Calculator vs Standard Deviation Calc

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

Head to head
About

Statistics Calculator

This app provides essential statistical calculations and regression analysis with an intuitive interface. Easily input data, view statistical measures, and perform various regression models. Advanced features are unlocked via in-app purchases.

Highlights
  • List data entry and management
  • Basic statistical measures (mean, std dev, etc.)
  • Linear, logarithmic, exponential, power regression
  • Regression model graphing
  • Probability distributions
  • Confidence intervals
  • Hypothesis tests
Features
Read full description

Statistics Calculator-- is an introductory app for our flagship Statistics Calculator++, a calculator with great advanced scientific features as well as statistical, regression analysis, probability distributions, confidence intervals, and hypothesis tests capabilities.  Statistics Calculator-- will have all the functionality of Statistics Calculator++ by purchasing a single In-App Purchase. The purchase will remove the limit on the size of the lists, unlocks the advanced scientific features, graphs the regression models, and unlocks probability distributions, confidence intervals, and hypothesis tests capabilities. In designing the statistics functions of this app we had one thing in mind: The user should not need to read a single line of manual to perform the statistical analysis. Simply use Add X, Add Y, and Add f buttons to enter the elements of the lists and frequencies, if any. And you are done. All the statistics and regression models are only a few taps and swipes away. Tap the List button to see the lists entered. The elements of the lists are interpreted independently (as two separate lists) and jointly for regression analysis (if the size of the lists are equal). The sum, mean, population standard deviation, sample standard deviation, sample variance, sum of squares, min, max, quartiles, and sum of multiplications of two lists are presented in a table. Each statistics measure can be chosen from the table and used for further calculations. For regression analysis linear regression, logarithmic regression, exponential regression, power regression, and quadratic regression (through an additional In-App Purchase) are calculated. Statistics Calculator-- has an extremely simple and intuitive user interface to choose the regression model and calculate predictions for x and y values and view residuals and residual sum of squares. Other major features of Statistics Calculator-- are: - The left pane scrolls to reveal more functionality without a need to switch modes. The digits and most common operations are always visible and the less common operations can be revealed by scrolling the left half of the screen. - Shows the expression as you enter and keeps a history of your calculations (Swipe up on the screen to reveal the history) - Backspace to delete last digit entered. - Sinusoidal functions can be calculated for angles in units of degrees, radians, or gradians. The following features are available through Advanced Scientific In-App Purchase. - Capability of performing fraction manipulations and converting between different formats (proper, improper, and mixed fractions) and seamless integration of fraction, integer, and decimal manipulations. - Capability of inputting degrees, minutes, and seconds for angles and converting between degrees-minutes-seconds format and decimal format. - Capability of calculating permutation, combination, Least Common Multiple (LCM), Greatest Common Divisor (GCD), and prime factorization. - Quadratic and system of two linear equations solver - Rectangular to polar and polar to rectangular coordinate conversion (extremely useful for phasor calculations for electrical engineers) - Throws a set of dice (choice of 1 die to 4 dice) You are going to love the simplicity of the user interface and yet have the powerful functionality with which Statistics Calculator-- is loaded. Please do not hesitate to contact us for any questions, comments, to report any bugs, or to suggest additional functions you would like to see in the upcoming updates.

About

Standard Deviation Calc

Calculate standard deviation for sample or population data. Input numerical values to find standard deviation, count, sum, mean, variance, and more. Get quick statistical insights with this easy-to-use tool.

Highlights
  • Calculate standard deviation
  • Sample or population data
  • Compute mean and variance
  • Count numerical values
  • Sum of numbers
  • List of differences
Features
Read full description

Use this app to calculate standard deviation for a population or sample data set. Enter your numerical values, and the app will instantly calculate standard deviation, variance, mean, count, sum, and other supporting statistics. Results are estimates for informational purposes only. We are very happy to serve you. If you have any requests, don't hesitate to contact us. - https://www.facebook.com/phan.nhatdang.3/ - phannhatd@gmail.com

Screenshots

Statistics Calculator4 screens
Standard Deviation Calc3 screens

Verdict

The call

The clearest difference is review sentiment: Statistics Calculator at 57% against Standard Deviation Calc's 0%. Statistics Calculator also leads on rating (4.4 vs 3.7) and ratings volume (317 vs 11). Standard Deviation Calc's advantage is update cadence (every 5 months vs every 21 months). On price, 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

Both are free to download. Statistics Calculator sells 2 one-off in-app purchases and Standard Deviation Calc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Statistics Calculator holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: Statistics Calculator has 317 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 57% of Statistics Calculator's written reviews are positive against 0% of Standard Deviation Calc's.

UpkeepUpdate frequency

Statistics Calculator ships an update every 21 months, Standard Deviation Calc every 5 months. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

Scorecard4 real differences · 6 level
Statistics Calculator versus Standard Deviation Calc: the parameters behind the verdict, then further details
ParameterStatistics CalculatorStandard Deviation Calc
PriceFreeFree
Rating4.4 (317 ratings) — better3.7 (11 ratings)
Positive reviews57.1% of reviews — better0.0% of reviews
Number of ratings317 — better11
Update frequencyEvery 21 monthsEvery 5 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.614.0 — better
Further details — not scored
Size4 MB2 MB
Age rating4+4+
DeveloperDogahePhan Nhat Đang

Customer experience

Statistics Calculator

All ratings317 ratings
Positive85.5%
Neutral3.8%
Negative10.7%
Written reviews7 reviews
Positive57.1%
Neutral14.3%
Negative28.6%

Standard Deviation Calc

All ratings11 ratings
Positive63.6%
Neutral9.1%
Negative27.3%
Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

In-app purchases

2 purchases

Statistics Calculator

One-time2
  • Full Access - All Features$2.99
  • Statistics Calculator++$2.99
1 purchases

Standard Deviation Calc

One-time1
  • Remove ads$1.99

Questions

Is Statistics Calculator free?
Statistics Calculator is free to download, with in-app purchases available.
Is Standard Deviation Calc free?
Standard Deviation Calc is free to download, with in-app purchases available.
Which has better reviews, Statistics Calculator or Standard Deviation Calc?
Statistics Calculator is rated higher. Statistics Calculator averages 4.4 out of 5 from 317 ratings, while Standard Deviation Calc averages 3.7 from 11 ratings.
Do Statistics Calculator or Standard Deviation Calc have ads?
Neither Statistics Calculator nor Standard Deviation Calc shows ads.
Which is updated more often, Statistics Calculator or Standard Deviation Calc?
Statistics Calculator ships an update every 21 months, and Standard Deviation Calc every 5 months. Most recently, Statistics Calculator was updated on September 24, 2026 and Standard Deviation Calc on September 21, 2026.

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