# Roman Builder vs Alien Attack Idle Simulator 3D

The clearest difference is in-app purchases: Roman Builder at none against Alien Attack Idle Simulator 3D's 11. Roman Builder also leads on iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | Roman Builder | Alien Attack Idle Simulator 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/roman-builder/id1591672080/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Every 4 days |
| Monetization | Ad-supported | — |
| Size | 196 MB | 175 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alma Reklam Bilisim Sanayi Ve Ticaret A.S.](https://appshunter.io/developer/410295259) | [APPWILL COMPANY LTD](https://appshunter.io/developer/1761313938) |

## What reviewers say

### Roman Builder

[App page](https://appshunter.io/ios/app/roman-builder/id1591672080)

Construct a Roman city from its foundations and expand it into a vast empire. Experience the growth of your civilization from a small settlement to a dominant force.

**Highlights:** Build Roman cities, Expand to an empire, City construction, Empire management

**Features:** Vision Pro support

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Roman Builder free?

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

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

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

### Do Roman Builder or Alien Attack Idle Simulator 3D have ads?

Both Roman Builder and Alien Attack Idle Simulator 3D show ads.

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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.*