# Asteroid Defender vs Circle Blast

The clearest difference is in-app purchases: Circle Blast at none against Asteroid Defender's 1. Circle Blast also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (11.0 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. Circle Blast asks for nothing beyond the download.

Asteroid Defender ships an update every 2 months, Circle Blast every 3 weeks. The most recent releases landed on September 28, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Asteroid Defender | Circle Blast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 55 MB | 58 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Reece Barr](https://appshunter.io/developer/1558879229) | [Yllka Camaj](https://appshunter.io/developer/1721128815) |

## What reviewers say

### 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 |


### Circle Blast

[App page](https://appshunter.io/ios/app/circle-blast/id6738114632)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Asteroid Defender free?

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

### Is Circle Blast free?

Circle Blast is free to download, with no in-app purchases.

### Do Asteroid Defender or Circle Blast have ads?

Neither Asteroid Defender nor Circle Blast shows ads.

### Which is updated more often, Asteroid Defender or Circle Blast?

Asteroid Defender ships an update every 2 months, and Circle Blast every 3 weeks. Most recently, Asteroid Defender was updated on September 28, 2026 and Circle Blast on September 17, 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.*