# Operation Order vs Math Drill

The clearest difference is in-app purchases: Operation Order at none against Math Drill's 2. Math Drill's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Math Drill sells 2 in-app purchases, starting at $2.99 per 7 days. Operation Order asks for nothing beyond the download.

## The numbers

| Metric | Operation Order | Math Drill |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Monthly |
| Size | 7 MB | 6 MB |
| Requires iOS | 18 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Paul Thornton](https://appshunter.io/developer/1203471660) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### Operation Order

[App page](https://appshunter.io/ios/app/operation-order/id6746138959)

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

**In-app purchases:** none


### Math Drill

[App page](https://appshunter.io/ios/app/math-drill-mental-arithmetic/id6771411490)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Yearly | $14.99 | per year |


## Frequently asked questions

### Is Operation Order free?

Operation Order is free to download, with no in-app purchases.

### Is Math Drill free?

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

### Do Operation Order or Math Drill have ads?

Operation Order shows ads; Math Drill 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.*