# Stupid Zombies® 2 vs Shatter Sync

The clearest difference is in-app purchases: Shatter Sync at none against Stupid Zombies® 2's 10. Shatter Sync also leads on update cadence (every 3 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Stupid Zombies® 2 sells 10 one-off in-app purchases. Shatter Sync asks for nothing beyond the download.

Stupid Zombies® 2 ships an update every 3 months, Shatter Sync every 3 weeks. The most recent releases landed on September 27, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Stupid Zombies® 2 | Shatter Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (17K ratings)](https://appshunter.io/ios/app/stupid-zombies-2/id568438534/reviews)** | — |
| Number of ratings | **17K** | — |
| Positive reviews | 84.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 180 MB | 261 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [GameResort LLC](https://appshunter.io/developer/301101149) | [Yuusuke Mizukurai](https://appshunter.io/developer/1757158569) |

## What reviewers say

### Stupid Zombies® 2

[App page](https://appshunter.io/ios/app/stupid-zombies-2/id568438534)

Engage in a zombie-slaying adventure with a sequel packed with new creatures, weapons, and puzzles. Enjoy 600 levels of bouncy gun shooting fun with a choice of hero characters and competitive leaderboards.

**Highlights:** 600 levels, Bouncy gun shooting gameplay, Male and female hero characters, Game Center leaderboards, New creatures and weapons

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Air Strikes | $0.99 | one-time |
| 5 Ammo Resurrections | $0.99 | one-time |
| Circus Levels | $0.99 | one-time |
| Snow Levels | $0.99 | one-time |
| WIld West Levels | $0.99 | one-time |
| 10 Air Strikes | $1.99 | one-time |
| 50 Air Strikes | $3.99 | one-time |
| 50 Ammo Resurrections | $3.99 | one-time |
| 100 Air Strikes | $4.99 | one-time |
| 1000 Ammo Resurrections | $9.99 | one-time |

**What reviewers like**

- 👍 Fun and addictive gameplay
- 🎨 Great graphics and visuals
- 💥 Satisfying zombie-killing action
- 🕹️ Challenging but rewarding levels
- 🕰️ Nostalgic childhood memories

**What reviewers complain about**

- 💰 Excessive ads and in-app purchases
- 🐛 Bugs and glitches in certain levels
- 🎮 Lack of controller support
- 🔍 Difficulty spikes in later levels

**Reported bugs**

- Barrel not exploding on Wild West Level 13
- Crashes and data loss issues
- Compatibility problems on older devices

**Requested features**

- Add controller support
- Introduce new playable characters
- Expand level selection with more variety
- Improve level design and balancing


### Shatter Sync

[App page](https://appshunter.io/ios/app/shatter-sync/id6538728959)

**In-app purchases:** none


## Frequently asked questions

### Is Stupid Zombies® 2 free?

Stupid Zombies® 2 is free to download, with in-app purchases available.

### Is Shatter Sync free?

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

### Do Stupid Zombies® 2 or Shatter Sync have ads?

Both Stupid Zombies® 2 and Shatter Sync show ads.

### Which is updated more often, Stupid Zombies® 2 or Shatter Sync?

Stupid Zombies® 2 ships an update every 3 months, and Shatter Sync every 3 weeks. Most recently, Stupid Zombies® 2 was updated on September 27, 2026 and Shatter Sync on September 21, 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.*