# Aspect Ratio Pro vs PDF Scan

The clearest difference is price: PDF Scan at Free against Aspect Ratio Pro's $3.99. PDF Scan also leads on rating (5.0 vs 4.0) and ratings volume (3 vs 1). Aspect Ratio Pro's advantage is in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 2 months). On review sentiment, ads and device support there is nothing between them.

PDF Scan is free to download; Aspect Ratio Pro costs $3.99 up front. PDF Scan sells 2 in-app purchases, starting at $4.99 per month. Aspect Ratio Pro asks for nothing beyond the download.

PDF Scan holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Aspect Ratio Pro ships an update every 3 weeks, PDF Scan every 2 months. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Aspect Ratio Pro | PDF Scan |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/aspect-ratio-pro/id6747417099/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pdf-scan-scanner-and-reader/id6751232307/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Paid | **Freemium** |
| Size | 42 MB | 3 MB |
| Requires iOS | 18.6 | **16.6** |
| Devices | **iPhone, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [App ahead GmbH](https://appshunter.io/developer/955848754) | [家宝 戴](https://appshunter.io/developer/1826395838) |

## What reviewers say

### Aspect Ratio Pro

[App page](https://appshunter.io/ios/app/aspect-ratio-pro/id6747417099)

This app helps you quickly solve for an unknown value in a proportion. Simply input three known numbers, and it will calculate the fourth, making ratio and proportion calculations effortless.

**Highlights:** Rule of three calculations, Instant fourth value calculation, Ratio and proportion solver, Intuitive input interface, Supports iPhone and Mac

**In-app purchases:** none


### PDF Scan

[App page](https://appshunter.io/ios/app/pdf-scan-scanner-and-reader/id6751232307)

This app transforms your iPhone into a powerful document scanner. Quickly capture and digitize documents, receipts, and business cards, creating high-quality PDF files. Organize, manage, and share your scans with ease, with advanced features available via subscription.

**Highlights:** Scan documents instantly, Automatic edge detection and cropping, High-quality PDF creation, Multi-page scanning, Document management tools, Share and export scans

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDFScan Pro Monthly | $4.99 | per month |
| PDFScan Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is Aspect Ratio Pro free?

Aspect Ratio Pro costs $3.99, with no in-app purchases.

### Is PDF Scan free?

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

### Which has better reviews, Aspect Ratio Pro or PDF Scan?

PDF Scan is rated higher. Aspect Ratio Pro averages 4.0 out of 5 from 1 ratings, while PDF Scan averages 5.0 from 3 ratings.

### Do Aspect Ratio Pro or PDF Scan have ads?

Neither Aspect Ratio Pro nor PDF Scan shows ads.

### Which is updated more often, Aspect Ratio Pro or PDF Scan?

Aspect Ratio Pro ships an update every 3 weeks, and PDF Scan every 2 months. Most recently, Aspect Ratio Pro was updated on October 15, 2026 and PDF Scan on September 30, 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.*