# Constructors Prime vs The Crawlspace Ace

The clearest difference is update cadence: Constructors Prime at every 5 weeks against The Crawlspace Ace's every 23 months. Constructors Prime also leads on iOS requirement (13.0 vs 15.0). 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.

Constructors Prime ships an update every 5 weeks, The Crawlspace Ace every 23 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Constructors Prime | The Crawlspace Ace |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 23 months |
| Size | 37 MB | 37 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Concrete Constructors LLC](https://appshunter.io/developer/1639523872) | [The Crawlspace Ace LLC](https://appshunter.io/developer/1655056216) |

## What reviewers say

### Constructors Prime

[App page](https://appshunter.io/ios/app/constructors-prime/id1639523870)

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

**In-app purchases:** none


### The Crawlspace Ace

[App page](https://appshunter.io/ios/app/the-crawlspace-ace/id6444506301)

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

**In-app purchases:** none


## Frequently asked questions

### Is Constructors Prime free?

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

### Is The Crawlspace Ace free?

The Crawlspace Ace is free to download, with no in-app purchases.

### Do Constructors Prime or The Crawlspace Ace have ads?

Neither Constructors Prime nor The Crawlspace Ace shows ads.

### Which is updated more often, Constructors Prime or The Crawlspace Ace?

Constructors Prime ships an update every 5 weeks, and The Crawlspace Ace every 23 months. Most recently, Constructors Prime was updated on October 9, 2026 and The Crawlspace Ace on October 6, 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.*