# Protocol 4 vs Hantu Line

The clearest difference is price: Protocol 4 at Free against Hantu Line's $2.99. Hantu Line's advantage is in-app purchases (none vs 7) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Protocol 4 is free to download; Hantu Line costs $2.99 up front. Protocol 4 sells 7 one-off in-app purchases. Hantu Line asks for nothing beyond the download.

Protocol 4 ships an update every 4 months, Hantu Line monthly. The most recent releases landed on September 6, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Protocol 4 | Hantu Line |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Monthly** |
| Size | 12 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [HAKAN OZGER](https://appshunter.io/developer/1855495033) | [Anand Raj R](https://appshunter.io/developer/514675684) |

## 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 |


### Hantu Line

[App page](https://appshunter.io/ios/app/hantu-line/id6791018993)

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

**In-app purchases:** none


## Frequently asked questions

### Is Protocol 4 free?

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

### Is Hantu Line free?

Hantu Line costs $2.99, with no in-app purchases.

### Do Protocol 4 or Hantu Line have ads?

Protocol 4 shows ads; Hantu Line does not.

### Which is updated more often, Protocol 4 or Hantu Line?

Protocol 4 ships an update every 4 months, and Hantu Line monthly. Most recently, Protocol 4 was updated on September 6, 2026 and Hantu Line on September 26, 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.*