# Hex Defense vs Undersoil

The clearest difference is in-app purchases: Hex Defense at none against Undersoil's 3. Undersoil's advantage is update cadence (daily vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Undersoil sells 3 one-off in-app purchases. Hex Defense asks for nothing beyond the download.

Hex Defense ships an update every 2 months, Undersoil daily. The most recent releases landed on October 18, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Hex Defense | Undersoil |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Daily** |
| Size | 184 MB | 70 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hot Yeti Studio OU](https://appshunter.io/developer/1643923250) | [Connor Burns](https://appshunter.io/developer/1893761320) |

## What reviewers say

### Hex Defense

[App page](https://appshunter.io/ios/app/hex-defense-zombies/id6743439059)

**Features:** macOS Compatibility

**In-app purchases:** none


### Undersoil

[App page](https://appshunter.io/ios/app/undersoil/id6809608124)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gem Pouch | $2.99 | one-time |
| Chest of Gems | $9.99 | one-time |
| Vault of Gems | $19.99 | one-time |


## Frequently asked questions

### Is Hex Defense free?

Hex Defense is free to download, with no in-app purchases.

### Is Undersoil free?

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

### Do Hex Defense or Undersoil have ads?

Both Hex Defense and Undersoil show ads.

### Which is updated more often, Hex Defense or Undersoil?

Hex Defense ships an update every 2 months, and Undersoil daily. Most recently, Hex Defense was updated on October 18, 2026 and Undersoil on October 10, 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.*