# Probability Distribution vs Stats & Probability Calculator

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.

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.

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

## The numbers

| Metric | Probability Distribution | Stats & Probability Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (15 ratings)](https://appshunter.io/ios/app/probability-distribution/id6447695305/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Paid | — |
| Size | 7 MB | 27 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Madiyar Aitbayev](https://appshunter.io/developer/1229466587) | [Vladislav Zhirnov](https://appshunter.io/developer/1476188065) |

## What reviewers say

### Probability Distribution

[App page](https://appshunter.io/ios/app/probability-distribution/id6447695305)

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:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Distributions | $2.99 | one-time |


### Stats & Probability Calculator

[App page](https://appshunter.io/ios/app/stats-and-probability-calculator/id6748586083)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version / monthly | $0.99 | per month |
| Full version / year | $2.99 | per year |
| Remove ADS | $3.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*