# Probability Paradox Lab vs Introductory Statistics Tutor

The clearest difference is ads: Introductory Statistics Tutor at none against Probability Paradox Lab's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Probability Paradox Lab sells 1 one-off in-app purchase and Introductory Statistics Tutor sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Probability Paradox Lab | Introductory Statistics Tutor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 18 MB | 22 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Non Kudo](https://appshunter.io/developer/1890455917) | [David Soulsby](https://appshunter.io/developer/1776367161) |

## What reviewers say

### Probability Paradox Lab

[App page](https://appshunter.io/ios/app/probability-paradox-lab/id6782385785)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock Pack | $0.99 | one-time |


### Introductory Statistics Tutor

[App page](https://appshunter.io/ios/app/introductory-statistics-tutor/id6815790980)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Topics | $4.99 | one-time |


## Frequently asked questions

### Is Probability Paradox Lab free?

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

### Is Introductory Statistics Tutor free?

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

### Do Probability Paradox Lab or Introductory Statistics Tutor have ads?

Probability Paradox Lab shows ads; Introductory Statistics Tutor does not.

### Which is updated more often, Probability Paradox Lab or Introductory Statistics Tutor?

Probability Paradox Lab ships an update every 3 weeks, and Introductory Statistics Tutor every 3 weeks. Most recently, Probability Paradox Lab was updated on November 10, 2026 and Introductory Statistics Tutor on October 31, 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.*