# Galaxy Alien Space Attack vs ThunderForce

The clearest difference is in-app purchases: Galaxy Alien Space Attack at none against ThunderForce's 1. Galaxy Alien Space Attack also leads on update cadence (daily vs every 5 days) and iOS requirement (13.0 vs 15.0). ThunderForce's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. ThunderForce sells 1 in-app purchase, starting at $0.99 per month. Galaxy Alien Space Attack asks for nothing beyond the download.

Galaxy Alien Space Attack ships an update daily, ThunderForce every 5 days. The most recent releases landed on September 26, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Galaxy Alien Space Attack | ThunderForce |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 5 days |
| Size | 87 MB | 74 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [刚 曾](https://appshunter.io/developer/324816540) | [Sun Huang](https://appshunter.io/developer/1819398501) |

## What reviewers say

### Galaxy Alien Space Attack

[App page](https://appshunter.io/ios/app/galaxy-alien-space-attack/id6790705228)

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

**In-app purchases:** none


### ThunderForce

[App page](https://appshunter.io/ios/app/thunderforce/id6802530155)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThunderForce Subscription | $0.99 | per month |


## Frequently asked questions

### Is Galaxy Alien Space Attack free?

Galaxy Alien Space Attack is free to download, with no in-app purchases.

### Is ThunderForce free?

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

### Do Galaxy Alien Space Attack or ThunderForce have ads?

Galaxy Alien Space Attack shows ads; ThunderForce does not.

### Which is updated more often, Galaxy Alien Space Attack or ThunderForce?

Galaxy Alien Space Attack ships an update daily, and ThunderForce every 5 days. Most recently, Galaxy Alien Space Attack was updated on September 26, 2026 and ThunderForce on October 5, 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.*