# Tetranea vs Protocol 4

The clearest difference is ads: Tetranea at none against Protocol 4's shown. Tetranea also leads on update cadence (every 4 days vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Tetranea sells 2 one-off in-app purchases and Protocol 4 sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Tetranea ships an update every 4 days, Protocol 4 every 3 months. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Tetranea | Protocol 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/tetranea/id6744836024/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 12 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nathanael Boxer](https://appshunter.io/developer/1809452360) | [HAKAN OZGER](https://appshunter.io/developer/1855495033) |

## What reviewers say

### Tetranea

[App page](https://appshunter.io/ios/app/tetranea/id6744836024)

This puzzle game combines roguelike deckbuilding with tile-placement mechanics on a 9x9 grid. Build a unique deck each run to alter gameplay, with over 200 cards to discover and modify. Enjoy short or long runs with increasing difficulty and multiple scoring methods.

**Highlights:** Roguelike deckbuilding, Tile placement on 9x9 grid, 200+ discoverable cards, Card modification, Boss battles, Row and column chaining, Multiple scoring methods

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tetranea Full Game | $2.99 | one-time |
| Tetranea Full Game | $4.99 | one-time |


### 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 |


## Frequently asked questions

### Is Tetranea free?

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

### Is Protocol 4 free?

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

### Do Tetranea or Protocol 4 have ads?

Protocol 4 shows ads; Tetranea does not.

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

Tetranea ships an update every 4 days, and Protocol 4 every 3 months. Most recently, Tetranea was updated on October 14, 2026 and Protocol 4 on October 8, 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.*