# Unit Converter and Conversion vs Document Scanner Scan Document

The clearest difference is rating: Document Scanner Scan Document at 5.0 against Unit Converter and Conversion's 4.0. Document Scanner Scan Document also leads on update cadence (every 3 weeks vs every 10 months) and iOS requirement (12.0 vs 15.0). Unit Converter and Conversion's advantage is ratings volume (55 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Unit Converter and Conversion sells 1 one-off in-app purchase and Document Scanner Scan Document sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Document Scanner Scan Document holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Unit Converter and Conversion has 55 ratings behind it against 1, so its average is the more settled of the two.

Unit Converter and Conversion ships an update every 10 months, Document Scanner Scan Document every 3 weeks. The most recent releases landed on October 20, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Unit Converter and Conversion | Document Scanner Scan Document |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (55 ratings)](https://appshunter.io/ios/app/unit-converter-and-conversion/id1350107532/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/document-scanner-scan-document/id1504647981/reviews)** |
| Number of ratings | **55** | 1 |
| Positive reviews | 81.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 42 MB | 37 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Asad Ahsan](https://appshunter.io/developer/1326954499) | [Muhammad Asad Khan](https://appshunter.io/developer/1227004769) |

## What reviewers say

### Unit Converter and Conversion

[App page](https://appshunter.io/ios/app/unit-converter-and-conversion/id1350107532)

This app offers a user-friendly interface for converting units across more than 40 categories, including length, weight, volume, and digital storage. It works offline and saves conversion history for future reference. Ideal for students and professionals needing quick and accurate conversions.

**Highlights:** Over 40 conversion categories, Offline functionality, Conversion history saving, User-friendly interface, Supports length, weight, volume, and more, Elegant graphics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unit Converter Pro | $4.99 | one-time |


### Document Scanner Scan Document

[App page](https://appshunter.io/ios/app/document-scanner-scan-document/id1504647981)

Transform your phone into a portable scanner. Capture high-quality images of any document, automatically detect edges, and enhance scans with filters. Save and share your digitized documents easily.

**Highlights:** Scan documents with phone camera, Automatic edge detection and cropping, Apply filters for clear scans, Store and access scanned documents, Share scanned documents via email, Scan images from gallery

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get Premium Version | $3.99 | one-time |


## Frequently asked questions

### Is Unit Converter and Conversion free?

Unit Converter and Conversion is free to download, with in-app purchases available.

### Is Document Scanner Scan Document free?

Document Scanner Scan Document is free to download, with in-app purchases available.

### Which has better reviews, Unit Converter and Conversion or Document Scanner Scan Document?

Document Scanner Scan Document is rated higher. Unit Converter and Conversion averages 4.0 out of 5 from 55 ratings, while Document Scanner Scan Document averages 5.0 from 1 ratings.

### Do Unit Converter and Conversion or Document Scanner Scan Document have ads?

Both Unit Converter and Conversion and Document Scanner Scan Document show ads.

### Which is updated more often, Unit Converter and Conversion or Document Scanner Scan Document?

Unit Converter and Conversion ships an update every 10 months, and Document Scanner Scan Document every 3 weeks. Most recently, Unit Converter and Conversion was updated on October 20, 2026 and Document Scanner Scan Document on October 5, 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.*