# Horizon Deep vs Below The Layer

The clearest difference is update cadence: Below The Layer at every 6 days against Horizon Deep's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Horizon Deep ships an update every 2 months, Below The Layer every 6 days. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Horizon Deep | Below The Layer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/below-the-layer/id6814332926/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | — | Free |
| Size | 9 MB | 19 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Alvin Wong](https://appshunter.io/developer/1875738247) | [James Seaward](https://appshunter.io/developer/1891697161) |

## What reviewers say

### Horizon Deep

[App page](https://appshunter.io/ios/app/horizon-deep-idle-abyss/id6793035722)

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

**In-app purchases:** none


### Below The Layer

[App page](https://appshunter.io/ios/app/below-the-layer/id6814332926)

Command a submarine in a tactical simulation. Interpret sonar, exploit thermal layers, and make critical decisions about evasion or engagement. Every choice has consequences in this challenging game of stealth and strategy.

**Highlights:** Sonar analysis, Target motion solutions, Periscope observation, Torpedo room operation, Weapon guidance, Patrol mission execution, Stealth tactics

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

**In-app purchases:** none


## Frequently asked questions

### Is Horizon Deep free?

Horizon Deep is free to download, with no in-app purchases.

### Is Below The Layer free?

Below The Layer is free to download, with no in-app purchases.

### Do Horizon Deep or Below The Layer have ads?

Neither Horizon Deep nor Below The Layer shows ads.

### Which is updated more often, Horizon Deep or Below The Layer?

Horizon Deep ships an update every 2 months, and Below The Layer every 6 days. Most recently, Horizon Deep was updated on October 21, 2026 and Below The Layer on October 24, 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.*