# PDF Reader Pro vs All Classes

The clearest difference is price: All Classes at Free against PDF Reader Pro's $19.99. All Classes also leads on in-app purchases (none vs 4) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

All Classes is free to download; PDF Reader Pro costs $19.99 up front. PDF Reader Pro sells 4 in-app purchases, starting at $39.99 per year. All Classes asks for nothing beyond the download.

PDF Reader Pro ships an update every 2 months, All Classes fortnightly. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | PDF Reader Pro | All Classes |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[4.3 (221 ratings)](https://appshunter.io/ios/app/pdf-reader-pro-signedit-pdf/id883101890/reviews)** | — |
| Number of ratings | **221** | — |
| Positive reviews | 69.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 237 MB | 32 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PDF Technologies, Inc.](https://appshunter.io/developer/1263126485) | [MIND for Information Technology and Media](https://appshunter.io/developer/1480680621) |

## What reviewers say

### PDF Reader Pro

[App page](https://appshunter.io/ios/app/pdf-reader-pro-signedit-pdf/id883101890)

This app allows users to read, edit, annotate, sign, convert, and fill out PDF documents on their mobile devices. It offers features like text editing, image modification, page management, and OCR capabilities, making it a comprehensive tool for PDF management.

**Highlights:** Edit PDF text and images, Annotate with highlights, notes, and drawings, Sign PDFs with custom signatures, Convert PDFs to Word, Excel, and more, Fill out interactive PDF forms, OCR scanned documents, Merge, split, and reorder PDF pages

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add 2-Device · Advanced Annual | $39.99 | per year |
| Add Devices · Advanced Annual | $49.99 | per year |
| PDF Pro · AI Annual | $79.99 | per year |
| Convert PDF to Office Pack | $9.99 | one-time |

**What reviewers like**

- 👍 User-friendly
- 🚀 Efficient file management
- 💡 Useful annotation tools
- 👍 Seamless cloud integration
- 🚀 Fast performance

**What reviewers complain about**

- 🐛 Crashes and stability issues
- 🔒 Unreliable security features
- 💡 Limited text editing capabilities
- 🐛 Conversion issues (PDF to Word)
- 💡 Missing merge/reorder PDF functions

**Reported bugs**

- Corrupted PDF files after updates
- Disappearing files and loss of organization
- Compatibility issues with newer iOS versions
- Unreliable PDF form filling
- Unexpected app crashes

**Requested features**

- Add undo/redo functionality
- Improve OCR accuracy
- Introduce password protection for PDFs
- Allow custom folder colors
- Enhance browser integration (history, new tabs)


### All Classes

[App page](https://appshunter.io/ios/app/all-classes/id6746405386)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF Reader Pro free?

PDF Reader Pro costs $19.99, and also offers in-app purchases.

### Is All Classes free?

All Classes is free to download, with no in-app purchases.

### Do PDF Reader Pro or All Classes have ads?

PDF Reader Pro shows ads; All Classes does not.

### Which is updated more often, PDF Reader Pro or All Classes?

PDF Reader Pro ships an update every 2 months, and All Classes fortnightly. Most recently, PDF Reader Pro was updated on November 6, 2026 and All Classes on October 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.*