# Alien Attack vs Build

The clearest difference is in-app purchases: Build at none against Alien Attack's 10. Build also leads on ads (none vs shown) and update cadence (every 3 days vs every 3 months). Alien Attack's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.5). On price there is nothing between them.

Both are free to download. Alien Attack sells 9 one-off in-app purchases. Build asks for nothing beyond the download.

Alien Attack ships an update every 3 months, Build every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Alien Attack | Build |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (11 ratings)](https://appshunter.io/ios/app/alien-attack-idle-arcade-game/id6502288455/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 381 MB | 43 MB |
| Requires iOS | **13.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [P.D. PLAYGENES INTERNATIONAL LIMITED](https://appshunter.io/developer/1492668667) | [Abdul Majid Shaikh](https://appshunter.io/developer/1886965229) |

## What reviewers say

### Alien Attack

[App page](https://appshunter.io/ios/app/alien-attack-idle-arcade-game/id6502288455)

Lead an alien entity in an idle survival game to conquer the planet by consuming humans and evolving your army. Face formidable bosses and complete quests in exhilarating arcade action.

**Highlights:** Eternal Evolution upgrades, Exhilarating arcade gameplay, Epic boss battles, Progression and exploration, Consume humans to grow army

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ads Blocker | $0.99 | one-time |
| One-time offer! | $2.99 | one-time |
| Pile of Gems | $4.99 | one-time |
| One-time offer! | $4.99 | one-time |
| One-time offer! | $6.99 | one-time |
| Heap of Gems | $9.99 | one-time |
| One-time offer! | $11.99 | one-time |
| One-time offer! | $14.99 | one-time |
| One-time offer! | $69.99 | one-time |


### Build

[App page](https://appshunter.io/ios/app/build-up-tower-stacking-game/id6760948644)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Alien Attack free?

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

### Is Build free?

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

### Do Alien Attack or Build have ads?

Alien Attack shows ads; Build does not.

### Which is updated more often, Alien Attack or Build?

Alien Attack ships an update every 3 months, and Build every 3 days. Most recently, Alien Attack was updated on October 30, 2026 and Build on October 31, 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.*