Comparison

Probability Distribution vs Stats & Probability Calculator

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

Head to head
About

Probability Distribution

This app allows users to calculate probabilities and visualize various continuous and discrete probability distributions. It supports a wide range of common distributions and plans to add more in the future.

Highlights
  • Calculate probabilities
  • Visualize distributions
  • Normal (Gaussian) distribution
  • Binomial distribution
  • Poisson distribution
  • Exponential distribution
Features
Read full description

Calculate probabilities and visualize probability distributions. Supported continuous probability distributions: - Normal (Gaussian) - t (Student's t) - Chi-Squared - F - Exponential - Gamma - Beta - Log-normal Supported discrete probability distributions: - Binomial - Poisson - Pascal - Geometric - Hypergeometric and more are coming.

About

Stats & Probability Calculator

Features
Read full description

Take the frustration out of statistics and probability calculations. Whether you’re a student tackling homework or a professional analyzing data, our all-in-one Statistics Calculator app gives you fast, accurate answers in seconds. No more tedious manual math or searching for formulas – with over 140 calculators across every area of stats, you’ll have the tool you need for any problem at your fingertips. Designed for ease of use and clarity, the app is organized into intuitive categories (Probability, Distributions, Descriptive Stats, and Inference/Test calculators). Simply pick a calculator, input your data or parameters, and get instant results. Complex calculations have never been this simple! Features & Highlights: Comprehensive Toolset: Covers basic to advanced statistics – from means, medians, and standard deviations up to complex regression analyses and hypothesis tests. (140+ calculators in one app!) - Probability & Paradoxes: Calculate probabilities and odds with ease. Solve classic puzzles like Bayes’ Theorem, the Birthday paradox, Monty Hall problem, Bertrand’s paradoxes, and more. Simulate random events with a Coin Flipper, Dice Roller, or even explore lottery odds and false-positive paradoxes. - Statistical Distributions: Work with all the important distributions. Compute probabilities, critical values, and percentiles for Normal, Binomial, Poisson, Exponential, Lognormal, - - - Uniform, and other distributions. Includes tools like a Central Limit Theorem simulator and Confidence Interval calculators for population parameters. - Descriptive Statistics: Instantly get summary stats for your data set. Enter your numbers to see the mean, median, mode, range, and standard deviation (population or sample). - - View 5-number summaries (min, Q1, median, Q3, max) and identify outliers with the IQR and outlier calculators. No data set is too large – let the app do the heavy lifting in moments. - Statistical Tests: Conduct hypothesis tests without tables or tedious calculations. Our app includes t-Tests (1-sample, 2-sample, paired), Chi-Square tests (goodness-of-fit, independence), z-tests, F-tests, and even one-way ANOVA. Just input your sample data or summary stats, and get test results with test-statistics and p-values instantly. - Regression Analysis: Go beyond basic stats – perform regressions and understand relationships in data. The app features Linear Regression (with R² (R-squared) and residual analysis), as well as Polynomial and Exponential regression tools. Determine the line of best fit for your data points and make predictions without needing a complex PC program. - Charts & Plots: Visualize your data for better insights. Create histograms, box plots, dot plots, pie charts, and stem-and-leaf plots on the fly. For any data you input, the app can generate charts so you can see distribution shapes and outliers. Turn raw numbers into a visual story in one tap. - Intuitive UI & Fast Results: No learning curve required – the interface is clean and simple. Calculators are grouped by category, and each comes with clear input fields and labels. Enter your figures and get results immediately, with no internet connection needed. The app is lightweight and works offline, so you can study or work on statistics anywhere. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Probability Distribution4 screens
Stats & Probability Calculator4 screens

Verdict

The call

The clearest difference is update cadence: Probability Distribution at every 2 weeks against Stats & Probability Calculator's every 4 months. On price, ads, in-app purchases and device support 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. Probability Distribution sells 1 one-off in-app purchase and Stats & Probability Calculator sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Probability Distribution ships an update every 2 weeks, Stats & Probability Calculator every 4 months. Both last shipped on September 9, 2026.

Scorecard1 real difference · 9 level
Probability Distribution versus Stats & Probability Calculator: the parameters behind the verdict, then further details
ParameterProbability DistributionStats & Probability Calculator
PriceFreeFree
Rating4.5 (15 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings15 — better—
Update frequencyEvery 2 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better16.6
Further details — not scored
Size7 MB27 MB
Age rating4+4+
DeveloperMadiyar AitbayevVladislav Zhirnov

In-app purchases

1 purchases

Probability Distribution

One-time1
  • Unlock All Distributions$2.99
3 purchases

Stats & Probability Calculator

Subscriptions2
  • Full version / monthly$0.991 Month
  • Full version / year$2.991 Year
One-time1
  • Remove ADS$3.99

Questions

Is Probability Distribution free?
Probability Distribution is free to download, with in-app purchases available.
Is Stats & Probability Calculator free?
Stats & Probability Calculator is free to download, with in-app purchases available.
Do Probability Distribution or Stats & Probability Calculator have ads?
Neither Probability Distribution nor Stats & Probability Calculator shows ads.
Which is updated more often, Probability Distribution or Stats & Probability Calculator?
Probability Distribution ships an update every 2 weeks, and Stats & Probability Calculator every 4 months. Most recently, Probability Distribution was updated on September 9, 2026 and Stats & Probability Calculator on September 9, 2026.

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