# Alien Attack Idle Simulator 3D vs Galaxy Mech Defender

The clearest difference is in-app purchases: Galaxy Mech Defender at none against Alien Attack Idle Simulator 3D's 11. Galaxy Mech Defender also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Alien Attack Idle Simulator 3D sells 11 one-off in-app purchases. Galaxy Mech Defender asks for nothing beyond the download.

## The numbers

| Metric | Alien Attack Idle Simulator 3D | Galaxy Mech Defender |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | — |
| Size | 175 MB | 159 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [APPWILL COMPANY LTD](https://appshunter.io/developer/1761313938) | [Robocar Ltd](https://appshunter.io/developer/1506567030) |

## What reviewers say

### Alien Attack Idle Simulator 3D

[App page](https://appshunter.io/ios/app/alien-attack-idle-simulator-3d/id6686404136)

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Little kit with currencys | $1.99 | one-time |
| Classic starter pack | $1.99 | one-time |
| Premium personalized kit | $1.99 | one-time |
| Premium starter pack | $3.29 | one-time |
| All premium starter pack | $3.69 | one-time |
| Medium kit with currencys | $5.49 | one-time |
| 600 Crystals | $7.39 | one-time |
| Big kit with currencys | $8.99 | one-time |
| All kit with currencys | $9.29 | one-time |
| 1100 Crystals | $12.99 | one-time |
| 1000 Crystals | $12.99 | one-time |


### Galaxy Mech Defender

[App page](https://appshunter.io/ios/app/galaxy-mech-defender/id6746713685)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Alien Attack Idle Simulator 3D free?

Alien Attack Idle Simulator 3D is free to download, with in-app purchases available.

### Is Galaxy Mech Defender free?

Galaxy Mech Defender is free to download, with no in-app purchases.

### Do Alien Attack Idle Simulator 3D or Galaxy Mech Defender have ads?

Alien Attack Idle Simulator 3D shows ads; Galaxy Mech Defender does not.

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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.*