# PDF Vault vs Calculator Construction Pro

The clearest difference is in-app purchases: Calculator Construction Pro at none against PDF Vault's 2. Calculator Construction Pro also leads on update cadence (every 3 days vs every 3 weeks). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. PDF Vault sells 2 in-app purchases, starting at $4.99 per month. Calculator Construction Pro asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for PDF Vault against 5.0 for Calculator Construction Pro. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews split almost evenly too, at 50% and 50% positive.

PDF Vault ships an update every 3 weeks, Calculator Construction Pro every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | PDF Vault | Calculator Construction Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/pdf-vault-document-app/id1599303874/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/calculator-construction-pro/id6451326555/reviews) |
| Number of ratings | 3 | **4** |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 4 MB | 3 MB |
| Requires iOS | 18.1 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dmytro Skorokhod](https://appshunter.io/developer/994177751) | [Stan Bugusky](https://appshunter.io/developer/1680383203) |

## What reviewers say

### PDF Vault

[App page](https://appshunter.io/ios/app/pdf-vault-document-app/id1599303874)

This ultra-lightweight application offers a comprehensive suite of PDF tools, including text-to-speech functionality, digital signing, document scanning, organization, and instant translation. It's designed for efficiency and ease of use, saving device space while enhancing productivity for work, study, or personal tasks.

**Highlights:** Text-to-speech for PDFs, Digital document signing, Scan paper documents to PDF, Organize and manage PDF files, Instant document translation, Ultra-lightweight and fast

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mox PDF Tool Unlimited Monthly | $4.99 | per month |
| Mox PDF Tool Unlimited Annually | $19.99 | per year |


### Calculator Construction Pro

[App page](https://appshunter.io/ios/app/calculator-construction-pro/id6451326555)

This construction calculator simplifies measurements for civil projects, asphalt work, and material quantities. It offers conversions for cubic feet, square yards, and truck loads, with ongoing updates based on user feedback.

**Highlights:** Cubic Feet conversion, Square Yards conversion, Truck Loads conversion, Asphalt calculations, Civil construction calculations, Continuous content updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF Vault free?

PDF Vault is free to download, with in-app purchases available.

### Is Calculator Construction Pro free?

Calculator Construction Pro is free to download, with no in-app purchases.

### Which has better reviews, PDF Vault or Calculator Construction Pro?

PDF Vault and Calculator Construction Pro are both rated 5.0 out of 5 on the App Store, from 3 and 4 ratings respectively.

### Do PDF Vault or Calculator Construction Pro have ads?

Neither PDF Vault nor Calculator Construction Pro shows ads.

### Which is updated more often, PDF Vault or Calculator Construction Pro?

PDF Vault ships an update every 3 weeks, and Calculator Construction Pro every 3 days. Most recently, PDF Vault was updated on October 24, 2026 and Calculator Construction Pro on October 24, 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.*