# Chess Studio vs Epub Reader

The clearest difference is ads: Chess Studio at none against Epub Reader's shown. Chess Studio also leads on iOS requirement (9.0 vs 15.0). Epub Reader's advantage is update cadence (every 11 days vs every 2 months) and chart position (#136 vs unranked). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Chess Studio sells 23 one-off in-app purchases and Epub Reader sells 4 in-app purchases, starting at $3.99 per year. Whichever you choose, the download price is not the number that matters.

Chess Studio ships an update every 2 months, Epub Reader every 11 days. The most recent releases landed on September 9, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Chess Studio | Epub Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (11K ratings)](https://appshunter.io/ios/app/epub-reader-read-epubchmtxt/id1296870631/reviews)** |
| Number of ratings | — | **11K** |
| Positive reviews | **60.0% of reviews** | 55.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 11 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | **#136** |
| Size | 11 MB | 70 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gambit Publications](https://appshunter.io/developer/689948994) | [俐 马](https://appshunter.io/developer/1896144174) |

## What reviewers say

### Chess Studio

[App page](https://appshunter.io/ios/app/chess-studio/id689948991)

Read chess books and instantly play through moves on screen. This app allows you to interact with chess e-books, automatically scrolling text and displaying positions on a board. Navigate variations, search content, and customize your reading experience.

**Highlights:** Play over moves on screen, Automatic text scrolling, Tap moves to display position, Navigate complex variations, Searchable content, Choice of layout options

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

**In-app purchases (23)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gambit Free Samples | Free | one-time |
| How to Beat Your Dad at Chess | $9.99 | one-time |
| Win with the Stonewall Dutch | $9.99 | one-time |
| 50 Essential Chess Lessons | $10.99 | one-time |
| Idiot-Proof Chess Repertoire | $10.99 | one-time |
| Win with the London System | $11.99 | one-time |
| Learn Chess Tactics | $11.99 | one-time |
| Understanding the Chess Openings | $11.99 | one-time |
| A Simple Chess Opening Repertoire for White | $11.99 | one-time |
| Understanding Chess Endgames | $13.99 | one-time |
| Understanding Chess Middlegames | $13.99 | one-time |
| Understanding Chess Move by Move | $13.99 | one-time |
| Secrets of Modern Chess Strategy | $13.99 | one-time |
| Mastering the Chess Openings Volume 1 | $13.99 | one-time |
| Mastering the Chess Openings Volume 2 | $13.99 | one-time |
| A Strategic Chess Opening Repertoire for White | $14.99 | one-time |
| John Nunn's Chess Course | $14.99 | one-time |
| Fundamental Chess Openings | $14.99 | one-time |
| Fundamental Chess Endings | $14.99 | one-time |
| How to Play Chess Endgames | $14.99 | one-time |
| Nunn's Chess Endings Volume 1 | $14.99 | one-time |
| Nunn's Chess Endings Volume 2 | $14.99 | one-time |
| Mammoth Book of Greatest Games | $14.99 | one-time |


### Epub Reader

[App page](https://appshunter.io/ios/app/epub-reader-read-epubchmtxt/id1296870631)

**Currently charting:** #136 Top Free · Book (US App Store)

This app offers a seamless reading experience for various ebook formats including EPUB, PDF, and CHM. It supports multiple compression formats and provides features like table of contents, note-taking, and bookmarking. Customize your reading with adjustable font sizes.

**Highlights:** Supports EPUB, PDF, CHM, RTF formats, Opens compressed files (ZIP, RAR, 7Zip), Table of Contents navigation, Note-taking functionality, Bookmark management, Customizable font size

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual professional version | $3.99 | per year |
| Remove Ads | $0.99 | one-time |
| Passcode Lock | $0.99 | one-time |
| Pro Version | $5.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Fast and responsive
- 💡 Convenient file transfer via WiFi
- 🤩 Great for casual reading

**What reviewers complain about**

- 🐛 Loses bookmarks and reading progress
- 🔍 Lacks search functionality
- 🌗 No dark mode option
- 📏 Limited customization options
- 💤 Doesn't remember last read position

**Reported bugs**

- Crashes when opening certain files
- Distorts images in some ebooks
- Fails to open ePub files consistently

**Requested features**

- Add dark mode
- Improve bookmark and progress tracking
- Implement search feature
- Increase customization options
- Allow variable screen timeout


## Frequently asked questions

### Is Chess Studio free?

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

### Is Epub Reader free?

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

### Do Chess Studio or Epub Reader have ads?

Epub Reader shows ads; Chess Studio does not.

### Which is updated more often, Chess Studio or Epub Reader?

Chess Studio ships an update every 2 months, and Epub Reader every 11 days. Most recently, Chess Studio was updated on September 9, 2026 and Epub Reader on September 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.*