# Jack and Joe World vs Zinza Math

The clearest difference is in-app purchases: Zinza Math at none against Jack and Joe World's 4. Jack and Joe World's advantage is iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Jack and Joe World sells 4 one-off in-app purchases. Zinza Math asks for nothing beyond the download.

## The numbers

| Metric | Jack and Joe World | Zinza Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | — |
| Size | 145 MB | 84 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hello Bard AS](https://appshunter.io/developer/366691544) | [ITissible SIA](https://appshunter.io/developer/1088412905) |

## What reviewers say

### Jack and Joe World

[App page](https://appshunter.io/ios/app/jack-and-joe-world/id413632340)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip - Cup of Coffee | $1.99 | one-time |
| Tip - Lunch | $3.99 | one-time |
| Tip - Dinner | $9.99 | one-time |
| Tip - Wow! | $34.99 | one-time |


### Zinza Math

[App page](https://appshunter.io/ios/app/zinza-math/id6744957772)

**In-app purchases:** none


## Frequently asked questions

### Is Jack and Joe World free?

Jack and Joe World is free to download, with in-app purchases available.

### Is Zinza Math free?

Zinza Math is free to download, with no in-app purchases.

### Do Jack and Joe World or Zinza Math have ads?

Neither Jack and Joe World nor Zinza Math 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.*