# OmniFocus 4 vs Chessvision.ai eBook Reader

The clearest difference is rating: Chessvision.ai eBook Reader at 4.6 against OmniFocus 4's 4.0. Chessvision.ai eBook Reader also leads on iOS requirement (13.4 vs 18.2). OmniFocus 4's advantage is ratings volume (344 vs 7) and review sentiment (52% vs 33%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. OmniFocus 4 sells 10 in-app purchases, starting at $9.99 per month and Chessvision.ai eBook Reader sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Chessvision.ai eBook Reader holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: OmniFocus 4 has 344 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 52% of OmniFocus 4's written reviews are positive against 33% of Chessvision.ai eBook Reader's, so the app with the better star average is not the one people write more warmly about.

OmniFocus 4 ships an update every 3 weeks, Chessvision.ai eBook Reader monthly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | OmniFocus 4 | Chessvision.ai eBook Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (344 ratings)](https://appshunter.io/ios/app/omnifocus-4/id1542143627/reviews) | **[4.6 (7 ratings)](https://appshunter.io/ios/app/chessvisionai-ebook-reader/id6599857782/reviews)** |
| Number of ratings | **344** | 7 |
| Positive reviews | **52.1% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 138 MB | 47 MB |
| Requires iOS | 18.2 | **13.4** |
| Devices | **iPhone, iPad, Mac, Apple Watch, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Omni Group](https://appshunter.io/developer/281731738) | [Pawel Kacprzak](https://appshunter.io/developer/1574933455) |

## What reviewers say

### OmniFocus 4

[App page](https://appshunter.io/ios/app/omnifocus-4/id1542143627)

This task management application helps busy professionals organize and prioritize their work. It offers a unified interface across multiple Apple devices, allowing users to create, organize, and focus on tasks efficiently. A free trial is available.

**Highlights:** Unified interface across Apple devices, Task creation and organization, Perspectives Bar for navigation, Focus mode for specific projects, Secure, end-to-end encrypted sync, Universal cross-platform purchase

**Features:** Siri integration, Apple Watch app

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Legacy Subscription | $9.99 | per month |
| Legacy Subscription | $99.99 | per year |
| Upgrade to v4 from v1-v3 | $37.49 | one-time |
| Upgrade v4 to Pro from v1-v3 | $37.49 | one-time |
| Unlock Standard (Mac Promo) | $56.00 | one-time |
| Unlock Standard | $74.99 | one-time |
| Upgrade from Standard to Pro | $74.99 | one-time |
| Upgrade to v4 Pro from v1-v3 | $74.99 | one-time |
| Unlock Pro (Mac Promo) | $111.99 | one-time |
| Unlock Pro | $149.99 | one-time |

**What reviewers like**

- 🚀 Streamlined and better than ever
- 🔒 End-to-end encrypted
- 👍 Universal interface across devices
- 🚀 Powerful task management features
- 👍 Customizable perspectives

**What reviewers complain about**

- 🐛 Buggy, crashes, and laggy
- 👎 Clunky and confusing user interface
- 👎 Degraded user interface compared to previous version
- 🐛 Sync issues and slow synchronization
- 👎 Lacks important features like time-sensitive notifications

**Reported bugs**

- View options button not working consistently
- Custom perspectives not persisting in sidebar
- App crashing on launch
- Drag and drop functionality issues
- Incorrect task completion when adding new tasks

**Requested features**

- Markdown support in notes
- Gantt view for projects
- Ability to reorder perspectives in the sidebar
- Print to PDF with due dates and completed dates
- Natural language processing for task creation


### Chessvision.ai eBook Reader

[App page](https://appshunter.io/ios/app/chessvisionai-ebook-reader/id6599857782)

Transform chess eBooks into interactive learning tools. Instantly view board setups from diagrams with a double-tap. Organize your library, analyze positions with engines, and create study sheets.

**Highlights:** Interactive diagram analysis, Organize chess eBooks, Analyze with chess engines, Create PDF study sheets, Export to PGN, Search and filter diagrams, Discover related resources

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chessvision.ai eBook Reader | $6.99 | per month |
| Chessvision.ai eBook Reader | $49.99 | per year |


## Frequently asked questions

### Is OmniFocus 4 free?

OmniFocus 4 is free to download, with in-app purchases available.

### Is Chessvision.ai eBook Reader free?

Chessvision.ai eBook Reader is free to download, with in-app purchases available.

### Which has better reviews, OmniFocus 4 or Chessvision.ai eBook Reader?

Chessvision.ai eBook Reader is rated higher. OmniFocus 4 averages 4.0 out of 5 from 344 ratings, while Chessvision.ai eBook Reader averages 4.6 from 7 ratings.

### Do OmniFocus 4 or Chessvision.ai eBook Reader have ads?

Neither OmniFocus 4 nor Chessvision.ai eBook Reader shows ads.

### Which is updated more often, OmniFocus 4 or Chessvision.ai eBook Reader?

OmniFocus 4 ships an update every 3 weeks, and Chessvision.ai eBook Reader monthly. Most recently, OmniFocus 4 was updated on October 25, 2026 and Chessvision.ai eBook Reader on October 24, 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.*