# Iron Prototype vs Space Defender

The clearest difference is ads: Space Defender at none against Iron Prototype's shown. Space Defender also leads on update cadence (daily vs monthly) and review sentiment (100% vs 71%). Iron Prototype's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Iron Prototype sells 1 one-off in-app purchase and Space Defender sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Iron Prototype ships an update monthly, Space Defender daily. The most recent releases landed on October 30, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Iron Prototype | Space Defender |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (21 ratings)](https://appshunter.io/ios/app/iron-prototype/id1564103773/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 390 MB | 1.2 GB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Bad Wolf Games](https://appshunter.io/developer/1151923536) | [Guillaume Merle](https://appshunter.io/developer/6815594429) |

## What reviewers say

### Iron Prototype

[App page](https://appshunter.io/ios/app/iron-prototype/id1564103773)

Become a superhero in this action-packed side-scrolling runner. Swing through diverse worlds using a rope hook, dodge deadly hazards, and collect power cells to unlock new characters. Are you ready for the ultimate spider hero adventure?

**Highlights:** Side-scrolling runner gameplay, Rope hook swinging mechanic, Diverse world exploration, Hazard dodging, Unlockable superhero characters, Power cell collection

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads and bonus | $5.99 | one-time |


### Space Defender

[App page](https://appshunter.io/ios/app/space-defender-frontier-squad/id6815695152)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full game | $4.99 | one-time |


## Frequently asked questions

### Is Iron Prototype free?

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

### Is Space Defender free?

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

### Do Iron Prototype or Space Defender have ads?

Iron Prototype shows ads; Space Defender does not.

### Which is updated more often, Iron Prototype or Space Defender?

Iron Prototype ships an update monthly, and Space Defender daily. Most recently, Iron Prototype was updated on October 30, 2026 and Space Defender on November 3, 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.*