# QuantDojo vs Probability Paradox Lab

The clearest difference is ads: QuantDojo at none against Probability Paradox Lab's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. QuantDojo sells 3 in-app purchases, starting at $12.99 per month and Probability Paradox Lab sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | QuantDojo | Probability Paradox Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 4 weeks |
| Size | 3 MB | 13 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Elias Lindbergs](https://appshunter.io/developer/1885362319) | [Non Kudo](https://appshunter.io/developer/1890455917) |

## What reviewers say

### QuantDojo

[App page](https://appshunter.io/ios/app/quantdojo/id6761349180)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $12.99 | per month |
| Annual | $79.99 | per year |
| Lifetime Access | $199.99 | one-time |


### 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 |


## Frequently asked questions

### Is QuantDojo free?

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

### Is Probability Paradox Lab free?

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

### Do QuantDojo or Probability Paradox Lab have ads?

Probability Paradox Lab shows ads; QuantDojo does not.

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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.*