# Alien Attack Idle Simulator 3D vs Phase Knight

The clearest difference is price: Alien Attack Idle Simulator 3D at Free against Phase Knight's $0.99. Alien Attack Idle Simulator 3D also leads on update cadence (every 4 days vs every 3 weeks) and iOS requirement (13.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Alien Attack Idle Simulator 3D is free to download; Phase Knight costs $0.99 up front. Alien Attack Idle Simulator 3D sells 11 one-off in-app purchases and Phase Knight sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Alien Attack Idle Simulator 3D ships an update every 4 days, Phase Knight every 3 weeks. The most recent releases landed on September 16, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Alien Attack Idle Simulator 3D | Phase Knight |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Size | 175 MB | 653 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [APPWILL COMPANY LTD](https://appshunter.io/developer/1761313938) | [晓刚 秦](https://appshunter.io/developer/544544246) |

## 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 |


### Phase Knight

[App page](https://appshunter.io/ios/app/phase-knight/id6757113982)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1000 golds | $0.99 | one-time |
| 2500 golds | $1.99 | one-time |
| 7000 golds | $4.99 | one-time |
| 15000 golds | $9.99 | one-time |
| 35000 golds | $19.99 | one-time |
| 80000 golds | $49.99 | one-time |


## 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 Phase Knight free?

Phase Knight costs $0.99, and also offers in-app purchases.

### Do Alien Attack Idle Simulator 3D or Phase Knight have ads?

Both Alien Attack Idle Simulator 3D and Phase Knight show ads.

### Which is updated more often, Alien Attack Idle Simulator 3D or Phase Knight?

Alien Attack Idle Simulator 3D ships an update every 4 days, and Phase Knight every 3 weeks. Most recently, Alien Attack Idle Simulator 3D was updated on September 16, 2026 and Phase Knight on September 10, 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.*