# Mars Defence vs Yard Defense

The clearest difference is in-app purchases: Mars Defence at none against Yard Defense's 4. Mars Defence also leads on update cadence (every 4 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Yard Defense sells 4 one-off in-app purchases. Mars Defence asks for nothing beyond the download.

Mars Defence ships an update every 4 days, Yard Defense every 2 weeks. The most recent releases landed on October 28, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Mars Defence | Yard Defense |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mars-defence/id6751149620/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Ad-supported | — |
| Size | 227 MB | 404 MB |
| Requires iOS | 16 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Maxim Ivanov](https://appshunter.io/developer/1833690848) | [PARTYARD, UNIPESSOAL, LDA](https://appshunter.io/developer/1178679823) |

## What reviewers say

### Mars Defence

[App page](https://appshunter.io/ios/app/mars-defence/id6751149620)

Defend Mars from alien invaders in this tower defense strategy game. Build and upgrade defensive towers, manage robots for resource gathering, and develop technologies to survive waves of enemies and complete the Martian campaign.

**Highlights:** 25 days of survival campaign, 5 tower types, Robot management for resource gathering, Economic strategy with resource mining, 8 enemy types, Tower and technology upgrade system, Persistent progress across missions

**In-app purchases:** none


### Yard Defense

[App page](https://appshunter.io/ios/app/yard-defense/id6766842675)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Yard Gems | $0.99 | one-time |
| 300 YardGems | $1.99 | one-time |
| Unlock 3X Speed | $1.99 | one-time |
| Trait Luck Boost | $1.99 | one-time |


## Frequently asked questions

### Is Mars Defence free?

Mars Defence is free to download, with no in-app purchases.

### Is Yard Defense free?

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

### Do Mars Defence or Yard Defense have ads?

Both Mars Defence and Yard Defense show ads.

### Which is updated more often, Mars Defence or Yard Defense?

Mars Defence ships an update every 4 days, and Yard Defense every 2 weeks. Most recently, Mars Defence was updated on October 28, 2026 and Yard Defense on October 9, 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.*