# Asteroid Defence vs Alto Asteroids

The clearest difference is ads: Asteroid Defence at none against Alto Asteroids's shown. Asteroid Defence also leads on update cadence (every 3 days vs weekly). Alto Asteroids'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. Neither carries in-app purchases, so what you see is what you pay.

Asteroid Defence ships an update every 3 days, Alto Asteroids weekly. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Asteroid Defence | Alto Asteroids |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Size | 80 MB | 86 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Athlas IO](https://appshunter.io/developer/1575192502) | [James John Group, LLC](https://appshunter.io/developer/799642938) |

## What reviewers say

### Asteroid Defence

[App page](https://appshunter.io/ios/app/asteroid-defence/id6470113925)

**In-app purchases:** none


### Alto Asteroids

[App page](https://appshunter.io/ios/app/alto-asteroids/id6742458675)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Asteroid Defence free?

Asteroid Defence is free to download, with no in-app purchases.

### Is Alto Asteroids free?

Alto Asteroids is free to download, with no in-app purchases.

### Do Asteroid Defence or Alto Asteroids have ads?

Alto Asteroids shows ads; Asteroid Defence does not.

### Which is updated more often, Asteroid Defence or Alto Asteroids?

Asteroid Defence ships an update every 3 days, and Alto Asteroids weekly. Most recently, Asteroid Defence was updated on October 15, 2026 and Alto Asteroids on October 25, 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.*