# Probability Practice vs Source

The clearest difference is in-app purchases: Probability Practice at none against Source's 4. Probability Practice also leads on iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Source sells 4 in-app purchases, starting at $24.99 per month. Probability Practice asks for nothing beyond the download.

## The numbers

| Metric | Probability Practice | Source |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 31 MB | 313 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Manish Kumar](https://appshunter.io/developer/1854995154) | [Super Real Inc](https://appshunter.io/developer/1891188531) |

## What reviewers say

### Probability Practice

[App page](https://appshunter.io/ios/app/probability-practice/id6760345315)

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

**In-app purchases:** none


### Source

[App page](https://appshunter.io/ios/app/source-find-yourself/id6761737790)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Committed Membership | $24.99 | per month |
| Committed Membership (3-months) | $69.99 | per 3 months |
| Committed Membership (6 months) | $125.99 | per 6 months |
| Committed Membership (1-year) | $229.00 | per year |


## Frequently asked questions

### Is Probability Practice free?

Probability Practice is free to download, with no in-app purchases.

### Is Source free?

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

### Do Probability Practice or Source have ads?

Neither Probability Practice nor Source shows ads.

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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.*