# Chain Reaction Zombie Game vs Bus Loop

The clearest difference is in-app purchases: Bus Loop at none against Chain Reaction Zombie Game's 1. Bus Loop also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Chain Reaction Zombie Game sells 1 one-off in-app purchase. Bus Loop asks for nothing beyond the download.

Chain Reaction Zombie Game ships an update every 2 months, Bus Loop fortnightly. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Chain Reaction Zombie Game | Bus Loop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 17 MB | 143 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 9+ |
| Developer | [Claudio Souza Mattos](https://appshunter.io/developer/1774316937) | [国新 夏](https://appshunter.io/developer/1538418070) |

## What reviewers say

### Chain Reaction Zombie Game

[App page](https://appshunter.io/ios/app/chain-reaction-zombie-game/id6450061404)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Bus Loop

[App page](https://appshunter.io/ios/app/bus-loopflow-sort/id6758687028)

**In-app purchases:** none


## Frequently asked questions

### Is Chain Reaction Zombie Game free?

Chain Reaction Zombie Game is free to download, with in-app purchases available.

### Is Bus Loop free?

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

### Do Chain Reaction Zombie Game or Bus Loop have ads?

Both Chain Reaction Zombie Game and Bus Loop show ads.

### Which is updated more often, Chain Reaction Zombie Game or Bus Loop?

Chain Reaction Zombie Game ships an update every 2 months, and Bus Loop fortnightly. Most recently, Chain Reaction Zombie Game was updated on November 7, 2026 and Bus Loop 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.*