# Mammoth by StorAxxS vs Prison Engine

The clearest difference is iOS requirement: Prison Engine at 12.4 against Mammoth by StorAxxS's 14.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Mammoth by StorAxxS | Prison Engine |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 11 MB | 18 MB |
| Requires iOS | 14.0 | **12.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Smarte Pty Ltd](https://appshunter.io/developer/419199411) | [Prison Engine](https://appshunter.io/developer/1788775525) |

## What reviewers say

### Mammoth by StorAxxS

[App page](https://appshunter.io/ios/app/mammoth-by-storaxxs/id6736968521)

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

**In-app purchases:** none


### Prison Engine

[App page](https://appshunter.io/ios/app/prison-engine/id6740180457)

**In-app purchases:** none


## Frequently asked questions

### Is Mammoth by StorAxxS free?

Mammoth by StorAxxS is free to download, with no in-app purchases.

### Is Prison Engine free?

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

### Do Mammoth by StorAxxS or Prison Engine have ads?

Neither Mammoth by StorAxxS nor Prison Engine shows 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.*