# Tower Gunner：Zombie Shooter 3D vs U

The clearest difference is in-app purchases: U at none against Tower Gunner：Zombie Shooter 3D's 1. U also leads on update cadence (every 3 weeks vs every 2 months). Tower Gunner：Zombie Shooter 3D's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Tower Gunner：Zombie Shooter 3D sells 1 one-off in-app purchase. U asks for nothing beyond the download.

Tower Gunner：Zombie Shooter 3D ships an update every 2 months, U every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Tower Gunner：Zombie Shooter 3D | U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (383 ratings)](https://appshunter.io/ios/app/tower-gunnerzombie-shooter-3d/id6468649750/reviews)** | — |
| Number of ratings | **383** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 310 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [AI Games FZ](https://appshunter.io/developer/1478916023) | [BARTOSZ RACZKOWSKI](https://appshunter.io/developer/6806374696) |

## What reviewers say

### Tower Gunner：Zombie Shooter 3D

[App page](https://appshunter.io/ios/app/tower-gunnerzombie-shooter-3d/id6468649750)

Engage in thrilling 3D zombie shooting action with intuitive controls. Defend against relentless undead hordes, upgrade your arsenal, and explore diverse, challenging environments. Play offline anytime, anywhere.

**Highlights:** 3D zombie shooting gameplay, Offline play, Weapon upgrades, Challenging levels, Diverse environments, Intuitive controls

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $9.99 | one-time |


### U

[App page](https://appshunter.io/ios/app/u-boot-hunter/id6806374694)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tower Gunner：Zombie Shooter 3D free?

Tower Gunner：Zombie Shooter 3D is free to download, with in-app purchases available.

### Is U free?

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

### Do Tower Gunner：Zombie Shooter 3D or U have ads?

Both Tower Gunner：Zombie Shooter 3D and U show ads.

### Which is updated more often, Tower Gunner：Zombie Shooter 3D or U?

Tower Gunner：Zombie Shooter 3D ships an update every 2 months, and U every 3 weeks. Most recently, Tower Gunner：Zombie Shooter 3D was updated on October 30, 2026 and U on October 31, 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.*