# Z vs Army Defence!

The clearest difference is rating: Army Defence! at 4.6 against Z's 3.4. Army Defence! also leads on ratings volume (11K vs 319). Z's advantage is update cadence (fortnightly vs every 6 weeks) and review sentiment (35% vs 22%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Z sells 4 one-off in-app purchases and Army Defence! sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Army Defence! holds the better App Store score, 4.6 against 3.4. That said, the two scores are not equally well evidenced: Army Defence! has 11K ratings behind it against 319, so its average is the more settled of the two. Written reviews complicate that: 35% of Z's written reviews are positive against 22% of Army Defence!'s, so the app with the better star average is not the one people write more warmly about.

Z ships an update fortnightly, Army Defence! every 6 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Z | Army Defence! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (319 ratings)](https://appshunter.io/ios/app/z-machine/id1625313578/reviews) | **[4.6 (11K ratings)](https://appshunter.io/ios/app/army-defence/id1644499551/reviews)** |
| Number of ratings | 319 | **11K** |
| Positive reviews | **34.9% of reviews** | 22.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 277 MB | 598 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 9+ |
| Developer | [Yso Corp](https://appshunter.io/developer/659815325) | [SayGames LTD](https://appshunter.io/developer/1551847165) |

## What reviewers say

### Z

[App page](https://appshunter.io/ios/app/z-machine/id1625313578)

Engage in thrilling zombie combat and upgrade your powerful Z-Machine. Battle through hordes of undead enemies to survive and conquer the apocalypse.

**Highlights:** Zombie combat, Vehicle upgrades, Horde survival, Apocalypse battles

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Character Pack | $2.99 | one-time |
| Remove ads | $2.99 | one-time |
| Vehicule Pack | $2.99 | one-time |
| Starter Pack | $3.99 | one-time |

**What reviewers like**

- 🚀 Fun and addictive gameplay
- 👍 Satisfying zombie-killing experience
- 💡 Interesting concept and mechanics

**What reviewers complain about**

- 🔍 Excessive and intrusive ads
- 🐛 Bugs and glitches preventing progress
- 💰 Paid features not working as expected

**Reported bugs**

- Game crashing or freezing
- Inability to progress past certain levels
- Paid features not functioning correctly

**Requested features**

- More levels and worlds to explore
- Ability to disable ads permanently
- Improved performance and stability


### Army Defence!

[App page](https://appshunter.io/ios/app/army-defence/id1644499551)

Defend your base against relentless enemy waves in this action-packed tower defense game. Strategically build defenses, deploy troops, and upgrade your arsenal to survive intense battles across diverse terrains. Conquer new war-torn locations and claim spoils of war.

**Highlights:** Strategic base defense building, Wave-based enemy assaults, Troop deployment and upgrades, Resource management and upgrades, Diverse combat environments, Loot collection and rewards

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tickets | $2.99 | one-time |
| Money Pack | $2.99 | one-time |
| Gold Pack | $2.99 | one-time |
| Let's Get It Started | $4.99 | one-time |
| Big Ticket Pack | $7.99 | one-time |
| Big Gold Pack | $9.99 | one-time |
| Big Money Pack | $9.99 | one-time |
| Ad-free Play | $9.99 | one-time |
| Huge Ticket Pack | $29.99 | one-time |
| Great Golly Gold! | $29.99 | one-time |

**What reviewers like**

- 🚀 Great game concept
- 👍 Honest game ads
- 🚀 Enjoyable gameplay

**What reviewers complain about**

- 🔍 Excessive ads
- 🐛 Bugs and glitches
- 🔋 Performance issues
- 🔇 Lack of sound/music

**Reported bugs**

- Squad selection/upgrade screen not working
- Freezing and crashing issues
- Progression bugs (e.g. airplane upgrade stuck)

**Requested features**

- Option to pay to remove ads
- Landscape mode support
- Leaderboard/friends list feature
- Ability to save/restore progress


## Frequently asked questions

### Is Z free?

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

### Is Army Defence! free?

Army Defence! is free to download, with in-app purchases available.

### Which has better reviews, Z or Army Defence!?

Army Defence! is rated higher. Z averages 3.4 out of 5 from 319 ratings, while Army Defence! averages 4.6 from 11K ratings.

### Do Z or Army Defence! have ads?

Both Z and Army Defence! show ads.

### Which is updated more often, Z or Army Defence!?

Z ships an update fortnightly, and Army Defence! every 6 weeks. Most recently, Z was updated on October 24, 2026 and Army Defence! on October 27, 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.*