# OOReader vs Project Ad Block

The clearest difference is price: OOReader at Free against Project Ad Block's $2.99. OOReader also leads on device support and iOS requirement (16.6 vs 26.0). Project Ad Block's advantage is in-app purchases (none vs 1).

OOReader is free to download; Project Ad Block costs $2.99 up front. OOReader sells 1 one-off in-app purchase. Project Ad Block asks for nothing beyond the download.

## The numbers

| Metric | OOReader | Project Ad Block |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Positive reviews | 53.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 37 MB | 6 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | **iPhone, iPad** | — |
| Age rating | 4+ | 4+ |
| Developer | [BML Solutions Inc.](https://appshunter.io/developer/349426067) | [Maher Zidan](https://appshunter.io/developer/460362969) |

## What reviewers say

### OOReader

[App page](https://appshunter.io/ios/app/ooreader/id480844649)

View office documents from various suites, including OpenOffice, LibreOffice, and Microsoft Office formats, as well as PDFs. Convert documents to PDF for easy sharing and printing, with an internet connection required for conversion.

**Highlights:** View ODF, DOCX, XLSX, PPTX, PDF, Convert documents to PDF, Share and print documents, Page-by-page viewing, Search within documents, Password protected document viewing (PRO)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OOReader Pro | $3.99 | one-time |

**What reviewers like**

- 👍 Works as advertised
- 🚀 Faithful representation of documents
- 💡 Allows viewing of OpenOffice/LibreOffice docs
- 🚀 Convenient for viewing documents on-the-go
- 👍 Useful for preaching/reading sermons

**What reviewers complain about**

- 🐛 Conversion errors/crashes when opening files
- 🔒 Security concerns with online file conversion
- 🔒 No local viewing, requires internet access
- 🐛 Buggy, unreliable, and unstable
- 🔋 High battery consumption

**Reported bugs**

- Crashes when opening files
- Inconsistent file handling (caching issues)
- Inability to open larger documents
- Compatibility issues with newer iOS versions

**Requested features**

- Add search and delete functions
- Improve handling of password-protected files
- Increase file size/page limit
- Add editing capabilities
- Improve font/formatting preservation


### Project Ad Block

[App page](https://appshunter.io/ios/app/project-ad-block/id6759156017)

**In-app purchases:** none


## Frequently asked questions

### Is OOReader free?

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

### Is Project Ad Block free?

Project Ad Block costs $2.99, with no in-app purchases.

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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.*