# Protocol 4 vs CodeCypher

Protocol 4 and CodeCypher are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Protocol 4 sells 7 one-off in-app purchases and CodeCypher sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Protocol 4 ships an update every 4 months, CodeCypher every 3 months. The most recent releases landed on September 6, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Protocol 4 | CodeCypher |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/codecypher-code-breaker/id6760431311/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 12 MB | 12 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HAKAN OZGER](https://appshunter.io/developer/1855495033) | [Kyle Richards](https://appshunter.io/developer/1824350051) |

## 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 |


### CodeCypher

[App page](https://appshunter.io/ios/app/codecypher-code-breaker/id6760431311)

Engage in a modern logic puzzle where you deduce a hidden number sequence. Each guess provides clues to help you eliminate possibilities and uncover the secret code through logical deduction. Offers infinite puzzles and a daily challenge.

**Highlights:** Elegant logic puzzle gameplay, Infinite puzzles, Daily puzzle challenge, Global leaderboards, Personal solving stats, Clean modern design

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Disable Ads | $2.99 | one-time |


## Frequently asked questions

### Is Protocol 4 free?

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

### Is CodeCypher free?

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

### Do Protocol 4 or CodeCypher have ads?

Both Protocol 4 and CodeCypher show ads.

### Which is updated more often, Protocol 4 or CodeCypher?

Protocol 4 ships an update every 4 months, and CodeCypher every 3 months. Most recently, Protocol 4 was updated on September 6, 2026 and CodeCypher on September 21, 2026.

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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.*