# Blast Chain vs Idle Server Defender

The clearest difference is in-app purchases: Idle Server Defender at none against Blast Chain's 10. Idle Server Defender also leads on update cadence (weekly vs every 6 weeks). Blast Chain's advantage is iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Blast Chain sells 10 one-off in-app purchases. Idle Server Defender asks for nothing beyond the download.

Blast Chain ships an update every 6 weeks, Idle Server Defender weekly. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Blast Chain | Idle Server Defender |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 313 MB | 169 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [MUST Games](https://appshunter.io/developer/1402502128) | [Thijs de Rechter](https://appshunter.io/developer/1835418078) |

## What reviewers say

### Blast Chain

[App page](https://appshunter.io/ios/app/blast-chain/id6475392772)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold Pack (Limited) | $0.99 | one-time |
| Blue Core Pack | $5.99 | one-time |
| Stage Pass 3 | $6.99 | one-time |
| Green Core Pack | $6.99 | one-time |
| Daily Gold Pack | $6.99 | one-time |
| Stage Pass 4 | $6.99 | one-time |
| Gem Pass 1 | $8.99 | one-time |
| Chap.10 Pack | $9.99 | one-time |
| Tier Ⅲ Core Pack! | $13.99 | one-time |
| Gem Pass 2 | $17.99 | one-time |


### Idle Server Defender

[App page](https://appshunter.io/ios/app/idle-server-defender/id6751500850)

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

**In-app purchases:** none


## Frequently asked questions

### Is Blast Chain free?

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

### Is Idle Server Defender free?

Idle Server Defender is free to download, with no in-app purchases.

### Do Blast Chain or Idle Server Defender have ads?

Both Blast Chain and Idle Server Defender show ads.

### Which is updated more often, Blast Chain or Idle Server Defender?

Blast Chain ships an update every 6 weeks, and Idle Server Defender weekly. Most recently, Blast Chain was updated on October 5, 2026 and Idle Server Defender on October 7, 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.*