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

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

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 Calculator4 screens
Standard Deviation4 screens

Verdict

The call

The clearest difference is in-app purchases: Standard Deviation at none against Statistics Calculator's 2. Standard Deviation also leads on update cadence (every 2 months vs every 21 months) and device support (4 vs 2). On price and ads 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. Standard Deviation asks for nothing beyond the download.

UpkeepUpdate frequency

Statistics Calculator ships an update every 21 months, Standard Deviation every 2 months. The most recent releases landed on September 24, 2026 and September 12, 2026 respectively.

Scorecard4 real differences · 6 level
Statistics Calculator versus Standard Deviation: the parameters behind the verdict, then further details
ParameterStatistics CalculatorStandard Deviation
PriceFreeFree
Rating4.4 (317 ratings) — better—
Positive reviews57.1% of reviews—
Number of ratings317 — better—
Update frequencyEvery 21 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.613.0 — better
Further details — not scored
Size4 MB21 MB
Age rating4+4+
DeveloperDogaheAhmad Sattar

In-app purchases

2 purchases

Statistics Calculator

One-time2
  • Full Access - All Features$2.99
  • Statistics Calculator++$2.99
None

Standard Deviation

No in-app purchases

Questions

Is Statistics Calculator free?
Statistics Calculator is free to download, with in-app purchases available.
Is Standard Deviation free?
Standard Deviation is free to download, with no in-app purchases.
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 21 months, and Standard Deviation every 2 months. Most recently, Statistics Calculator was updated on September 24, 2026 and Standard Deviation on September 12, 2026.

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