# Protocol 4 vs Hacker Reflex

The clearest difference is in-app purchases: Hacker Reflex at none against Protocol 4's 7. Hacker Reflex also leads on iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Protocol 4 sells 7 one-off in-app purchases. Hacker Reflex asks for nothing beyond the download.

## The numbers

| Metric | Protocol 4 | Hacker Reflex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | — |
| Size | 12 MB | 36 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HAKAN OZGER](https://appshunter.io/developer/1855495033) | [Ibrahim Deniz CELIK](https://appshunter.io/developer/1877549269) |

## What reviewers say

### Protocol 4

[App page](https://appshunter.io/ios/app/protocol-4-code-breaker-pvp/id6755742805)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pocket Change | $0.99 | one-time |
| Starter Kit | $1.99 | one-time |
| Agent License | $2.99 | one-time |
| Hacker's Stash | $4.99 | one-time |
| Pro Kit | $4.99 | one-time |
| Trust Fund | $9.99 | one-time |
| Master Kit | $9.99 | one-time |


### Hacker Reflex

[App page](https://appshunter.io/ios/app/hacker-reflex/id6759227967)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Protocol 4 free?

Protocol 4 is free to download, with in-app purchases available.

### Is Hacker Reflex free?

Hacker Reflex is free to download, with no in-app purchases.

### Do Protocol 4 or Hacker Reflex have ads?

Both Protocol 4 and Hacker Reflex show 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.*