# PDF Reader vs Best Proportion Calc

The clearest difference is rating: Best Proportion Calc at 5.0 against PDF Reader's 4.3. Best Proportion Calc also leads on review sentiment (100% vs 77%). PDF Reader's advantage is ads (none vs shown) and ratings volume (3.9K vs 4). On price, update cadence, 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.

Best Proportion Calc holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: PDF Reader has 3.9K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 77% of PDF Reader's written reviews are positive against 100% of Best Proportion Calc's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | PDF Reader | Best Proportion Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3.9K ratings)](https://appshunter.io/ios/app/pdf-reader-pdfelement/id1150215996/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/best-proportion-calc/id6474536406/reviews)** |
| Number of ratings | **3.9K** | 4 |
| Positive reviews | 76.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Size | 173 MB | 4 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wondershare Technology (Hunan) Co.,Ltd.](https://appshunter.io/developer/1721309409) | [Denis Belmont](https://appshunter.io/developer/1174113984) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-pdfelement/id1150215996)

This app offers a superior PDF reading experience with its innovative Liquid Mode, which optimizes documents for mobile screens. It also provides robust tools for annotating, signing, managing, and sharing your PDF files, catering to both work and study needs.

**Highlights:** Liquid Mode for optimized mobile reading, Annotation tools (pencil, text, highlighting), Handwritten signature insertion, File management (move, merge, copy, delete), Cloud service integration (Wondershare, iCloud), Create blank PDFs and folders

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient PDF editing
- 💡 Useful annotation tools
- 🚀 Convenient for students/professionals
- 👍 Great value for free app

**What reviewers complain about**

- 🐛 Crashes and glitches
- 🔒 Privacy concerns with account requirement
- 👎 Unintuitive user interface
- 🐛 Unreliable saving/syncing
- 👎 Limited functionality compared to paid version

**Reported bugs**

- Text boxes appearing randomly
- Inability to select/edit text in some PDFs
- Scrolling issues and page loading delays
- Incompatibility with certain PDF formats

**Requested features**

- Ability to edit text formatting (font, size, color)
- Support for multiple open documents
- Improved Apple Pencil integration
- Bookmark/favorite feature for frequently used PDFs
- Expanded cloud storage integration (OneDrive, Google Drive, etc.)


### Best Proportion Calc

[App page](https://appshunter.io/ios/app/best-proportion-calc/id6474536406)

Easily solve proportion problems with a simple and intuitive interface. This app uses the cross product method for quick and accurate calculations across various fields like finance and science. It's available offline and free to use.

**Highlights:** Intuitive proportion calculation, Cross product method for solving equations, Versatile for finance, science, and more, Offline functionality, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF Reader free?

PDF Reader is free to download, with no in-app purchases.

### Is Best Proportion Calc free?

Best Proportion Calc is free to download, with no in-app purchases.

### Which has better reviews, PDF Reader or Best Proportion Calc?

Best Proportion Calc is rated higher. PDF Reader averages 4.3 out of 5 from 3.9K ratings, while Best Proportion Calc averages 5.0 from 4 ratings.

### Do PDF Reader or Best Proportion Calc have ads?

Best Proportion Calc shows ads; PDF Reader does not.

### Which is updated more often, PDF Reader or Best Proportion Calc?

PDF Reader ships an update every 2 months, and Best Proportion Calc every 2 months. Most recently, PDF Reader was updated on September 23, 2026 and Best Proportion Calc on September 13, 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.*