# Stats tester mini vs Probability Distribution

The clearest difference is in-app purchases: Stats tester mini at none against Probability Distribution's 1. Probability Distribution's advantage is update cadence (every 2 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Probability Distribution sells 1 one-off in-app purchase. Stats tester mini asks for nothing beyond the download.

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

## The numbers

| Metric | Stats tester mini | Probability Distribution |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | — | Paid |
| Size | 4 MB | 7 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Ono](https://appshunter.io/developer/1401085377) | [Madiyar Aitbayev](https://appshunter.io/developer/1229466587) |

## What reviewers say

### Stats tester mini

[App page](https://appshunter.io/ios/app/stats-tester-mini/id1445990637)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Stats tester mini free?

Stats tester mini is free to download, with no in-app purchases.

### Is Probability Distribution free?

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

### Do Stats tester mini or Probability Distribution have ads?

Neither Stats tester mini nor Probability Distribution shows ads.

### Which is updated more often, Stats tester mini or Probability Distribution?

Stats tester mini ships an update every 4 months, and Probability Distribution every 2 weeks. Most recently, Stats tester mini was updated on September 9, 2026 and Probability Distribution 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.*