# Probability Distribution vs Statistics & Probability Tutor

The clearest difference is iOS requirement: Probability Distribution at 16.0 against Statistics & Probability Tutor's 18.2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Probability Distribution sells 1 one-off in-app purchase and Statistics & Probability Tutor sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Probability Distribution ships an update every 2 weeks, Statistics & Probability Tutor every 10 days. The most recent releases landed on September 26, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Probability Distribution | Statistics & Probability Tutor |
| --- | --- | --- |
| 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 10 days** |
| Monetization | Paid | — |
| Size | 7 MB | 48 MB |
| Requires iOS | **16.0** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Madiyar Aitbayev](https://appshunter.io/developer/1229466587) | [ByteCraft Solutions](https://appshunter.io/developer/1866155956) |

## 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 |


### Statistics & Probability Tutor

[App page](https://appshunter.io/ios/app/statistics-and-probability-tutor/id6767269528)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $34.99 | per year |


## Frequently asked questions

### Is Probability Distribution free?

Probability Distribution is free to download, with in-app purchases available.

### Is Statistics & Probability Tutor free?

Statistics & Probability Tutor is free to download, with in-app purchases available.

### Do Probability Distribution or Statistics & Probability Tutor have ads?

Neither Probability Distribution nor Statistics & Probability Tutor shows ads.

### Which is updated more often, Probability Distribution or Statistics & Probability Tutor?

Probability Distribution ships an update every 2 weeks, and Statistics & Probability Tutor every 10 days. Most recently, Probability Distribution was updated on September 26, 2026 and Statistics & Probability Tutor on October 3, 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.*