# Interstellar Guardian vs Asteroid Defender

The clearest difference is in-app purchases: Interstellar Guardian at none against Asteroid Defender's 1. Interstellar Guardian also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (10.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Asteroid Defender sells 1 one-off in-app purchase. Interstellar Guardian asks for nothing beyond the download.

Interstellar Guardian ships an update every 2 weeks, Asteroid Defender every 2 months. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Interstellar Guardian | Asteroid Defender |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (59 ratings)](https://appshunter.io/ios/app/interstellar-guardian/id1323000127/reviews)** | — |
| Number of ratings | **59** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 74 MB | 55 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carl Moss](https://appshunter.io/developer/1323000126) | [Reece Barr](https://appshunter.io/developer/1558879229) |

## What reviewers say

### Interstellar Guardian

[App page](https://appshunter.io/ios/app/interstellar-guardian/id1323000127)

Defend humanoids from alien invaders in this retro 80s-style arcade shooter. Experience fast-paced gameplay with classic mechanics, enhanced graphics, and engaging power-ups across hundreds of levels on three different planets.

**Highlights:** Fast-paced arcade action, Retro 80s-style graphics, Power-ups, Casual and classic modes, Hundreds of levels, Three different planets

**In-app purchases:** none


### Asteroid Defender

[App page](https://appshunter.io/ios/app/asteroid-defender/id6463864588)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Interstellar Guardian free?

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

### Is Asteroid Defender free?

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

### Do Interstellar Guardian or Asteroid Defender have ads?

Neither Interstellar Guardian nor Asteroid Defender shows ads.

### Which is updated more often, Interstellar Guardian or Asteroid Defender?

Interstellar Guardian ships an update every 2 weeks, and Asteroid Defender every 2 months. Most recently, Interstellar Guardian was updated on October 3, 2026 and Asteroid Defender on October 14, 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.*