# Helix Protocol vs 4L13N

The clearest difference is price: Helix Protocol at Free against 4L13N's $0.99. Helix Protocol also leads on iOS requirement (16.0 vs 18.4). 4L13N's advantage is in-app purchases (none vs 7) and ads (none vs shown). On device support there is nothing between them.

Helix Protocol is free to download; 4L13N costs $0.99 up front. Helix Protocol sells 7 one-off in-app purchases. 4L13N asks for nothing beyond the download.

## The numbers

| Metric | Helix Protocol | 4L13N |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/4l13n/id6749152800/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | — |
| Monetization | — | Paid |
| Size | 45 MB | 569 MB |
| Requires iOS | **16.0** | 18.4 |
| Devices | iPhone | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Oleksii Poliakov](https://appshunter.io/developer/648955741) | [Harrison Lacy](https://appshunter.io/developer/1828934041) |

## What reviewers say

### Helix Protocol

[App page](https://appshunter.io/ios/app/helix-protocol/id936490163)

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50K Credits | $2.99 | one-time |
| 125K Credits | $5.99 | one-time |
| 175K Credits | $8.99 | one-time |
| 250K Credits | $12.99 | one-time |
| 500K Credits | $19.99 | one-time |
| 750K Credits | $24.99 | one-time |
| 1M Credits | $29.99 | one-time |


### 4L13N

[App page](https://appshunter.io/ios/app/4l13n/id6749152800)

Defend Earth from an alien invasion in this arcade-style ship-shooter. Upgrade your weapons and shooting rate to vaporize the extraterrestrial swarm. Your decisions will shape the future of the planet.

**Highlights:** Arcade-style gameplay, Alien invasion defense, Ship-shooter action, Weapon upgrade system, Decision-based upgrades

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Helix Protocol free?

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

### Is 4L13N free?

4L13N costs $0.99, with no in-app purchases.

### Do Helix Protocol or 4L13N have ads?

Helix Protocol shows ads; 4L13N 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.*