# PDF Expert vs OpenDocument Reader

The clearest difference is in-app purchases: OpenDocument Reader at none against PDF Expert's 12. PDF Expert's advantage is ads (none vs shown) and ratings volume (216K vs 897). On price, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Expert sells 10 in-app purchases, starting at $9.99 per month. OpenDocument Reader asks for nothing beyond the download.

PDF Expert holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: PDF Expert has 216K ratings behind it against 897, so its average is the more settled of the two. Written reviews point the same way: 46% of PDF Expert's written reviews are positive against 31% of OpenDocument Reader's.

PDF Expert ships an update fortnightly, OpenDocument Reader every 2 months. The most recent releases landed on September 25, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | PDF Expert | OpenDocument Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (216K ratings)](https://appshunter.io/ios/app/pdf-expert-editor-and-reader/id743974925/reviews)** | [4.5 (897 ratings)](https://appshunter.io/ios/app/opendocument-reader-view-odt/id1510195065/reviews) |
| Number of ratings | **216K** | 897 |
| Positive reviews | **46.0% of reviews** | 30.9% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Best chart rank | **#71** | — |
| Size | 307 MB | 9 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Readdle Technologies Limited](https://appshunter.io/developer/285035419) | [Stefl und Taschauer OG](https://appshunter.io/developer/1452061742) |

## What reviewers say

### PDF Expert

[App page](https://appshunter.io/ios/app/pdf-expert-editor-and-reader/id743974925)

**Currently charting:** #71 Top Grossing · Productivity, #193 Top Free · Productivity (US App Store)

This app allows you to edit, annotate, fill out forms, and convert PDF documents. It offers AI-powered summarization and analysis, along with tools to merge, sign, and protect your files. Work seamlessly across Apple devices with a user-friendly interface.

**Highlights:** Edit PDF text and images, Annotate and highlight PDFs, Fill out PDF forms, Convert files to and from PDF, AI-powered summarization and analysis, Merge and combine PDF files, Sign documents with e-signatures

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Expert Premium Trial | $9.99 | per month |
| PDF Expert Premium No Trial | $9.99 | per month |
| PDF Expert for Education | $39.99 | per year |
| PDF Expert Premium | $49.99 | per year |
| PDF Expert Premium New | $49.99 | per year |
| PDF Expert Premium Existing | $49.99 | per year |
| PDF Expert – Premium Editing | $49.99 | per year |
| PDF Expert Mac & iOS Pro | $79.99 | per year |
| PDF Expert Mac & iOS | $79.99 | per year |
| PDF Expert Basic | $9.99 | one-time |

**What reviewers like**

- 🚀 Fast and responsive
- 👍 Intuitive and user-friendly interface
- 💡 Powerful annotation and editing tools
- 🔒 Seamless cloud integration
- 📚 Excellent for reading and organizing PDFs

**What reviewers complain about**

- 🐛 Frequent crashes and stability issues
- 🔒 Subscription model for advanced features
- 🔒 Inconsistent pricing and feature changes
- 🔍 Cluttered and confusing UI in latest update
- 🔍 Reduced customization options for annotations

**Reported bugs**

- Corrupted PDFs after editing
- Sync issues with cloud storage providers
- Unexpected loss of annotations and edits
- Unreliable performance on older iPad models

**Requested features**

- Improved palm rejection for Apple Pencil
- Customizable toolbar and annotation presets
- Better integration with other productivity apps
- More flexible file management and organization
- Ability to create fillable PDF forms


### OpenDocument Reader

[App page](https://appshunter.io/ios/app/opendocument-reader-view-odt/id1510195065)

View and edit ODT, ODS, and ODP files on your mobile device. Seamlessly open documents from cloud storage or your device's file explorer, with support for password-protected files and keyword searching. Enjoy offline access and basic editing capabilities.

**Highlights:** View ODT, ODS, ODP files, Basic document editing, Open from cloud storage, Password-protected document support, Keyword search and highlighting, Offline functionality, Print documents

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Fast file opening
- 💡 Good ODT reader

**What reviewers complain about**

- 🐛 Corrupted files upon editing
- 🐛 Presentation issues with formatting and features
- 🐛 Inability to edit spreadsheets properly

**Reported bugs**

- Corrupted files
- Formatting issues
- Crashes and app closing issues

**Requested features**

- Dark mode option
- Better spreadsheet editing capabilities
- Improved file format compatibility


## Frequently asked questions

### Is PDF Expert free?

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

### Is OpenDocument Reader free?

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

### Which has better reviews, PDF Expert or OpenDocument Reader?

PDF Expert is rated higher. PDF Expert averages 4.7 out of 5 from 216K ratings, while OpenDocument Reader averages 4.5 from 897 ratings.

### Do PDF Expert or OpenDocument Reader have ads?

OpenDocument Reader shows ads; PDF Expert does not.

### Which is updated more often, PDF Expert or OpenDocument Reader?

PDF Expert ships an update fortnightly, and OpenDocument Reader every 2 months. Most recently, PDF Expert was updated on September 25, 2026 and OpenDocument Reader on September 22, 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.*