# Operation Order vs Study Buddy

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

Both are free to download. Study Buddy sells 2 in-app purchases, starting at $5.99 per month. Operation Order asks for nothing beyond the download.

## The numbers

| Metric | Operation Order | Study Buddy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 10 days |
| Size | 7 MB | 101 MB |
| Requires iOS | 18 | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Paul Thornton](https://appshunter.io/developer/1203471660) | [Joe Lee](https://appshunter.io/developer/1895743665) |

## 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


### Study Buddy

[App page](https://appshunter.io/ios/app/study-buddy-oc-and-selective/id6764348929)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Study Buddy Pro Monthly | $5.99 | per month |
| Study Buddy Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is Operation Order free?

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

### Is Study Buddy free?

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

### Do Operation Order or Study Buddy have ads?

Operation Order shows ads; Study Buddy 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.*