# Core Tower Defense vs Undersoil

The clearest difference is update cadence: Undersoil at daily against Core Tower Defense's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Core Tower Defense sells 10 one-off in-app purchases and Undersoil sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Core Tower Defense ships an update every 2 months, Undersoil daily. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Core Tower Defense | Undersoil |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Daily** |
| Size | 196 MB | 70 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [MUHAMMED TAHA AKTAS](https://appshunter.io/developer/1700498547) | [Connor Burns](https://appshunter.io/developer/1893761320) |

## What reviewers say

### Core Tower Defense

[App page](https://appshunter.io/ios/app/core-tower-defense-zombie-td/id6456525413)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Compensator 5 | $0.99 | one-time |
| Titanium 5 | $1.99 | one-time |
| Blueprint 5 | $2.99 | one-time |
| Compensator 25 | $3.99 | one-time |
| Skill Point 11 | $5.99 | one-time |
| Life Core 11 | $5.99 | one-time |
| Titanium 25 | $7.99 | one-time |
| Blueprint 25 | $12.99 | one-time |
| Skill Point 130 | $49.99 | one-time |
| Life Core 130 | $49.99 | one-time |


### 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 Core Tower Defense free?

Core Tower Defense is free to download, with in-app purchases available.

### Is Undersoil free?

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

### Do Core Tower Defense or Undersoil have ads?

Both Core Tower Defense and Undersoil show ads.

### Which is updated more often, Core Tower Defense or Undersoil?

Core Tower Defense ships an update every 2 months, and Undersoil daily. Most recently, Core Tower Defense was updated on November 3, 2026 and Undersoil on November 6, 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.*