# tsundoku reader vs Quill

The clearest difference is update cadence: Quill at every 9 days against tsundoku reader's every 5 months. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for tsundoku reader against 5.0 for Quill. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

tsundoku reader ships an update every 5 months, Quill every 9 days. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | tsundoku reader | Quill |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/tsundoku-reader/id6759117674/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/quill-ai-book-reader/id6762075206/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 207 MB | 20 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Evans Yu](https://appshunter.io/developer/1876629445) | [思涵 岳](https://appshunter.io/developer/1885417868) |

## What reviewers say

### tsundoku reader

[App page](https://appshunter.io/ios/app/tsundoku-reader/id6759117674)

This app offers a free, universal EPUB reader optimized for quick Japanese reading. It features an integrated, powerful Japanese dictionary and customizable reading settings for an enhanced on-the-go experience.

**Highlights:** Universal EPUB reader, Integrated Japanese dictionary, Paginated and continuous scroll modes, Autosave and progress tracking, Customizable font size and themes, Toggleable furigana, Vertical/horizontal text direction

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

**In-app purchases:** none


### Quill

[App page](https://appshunter.io/ios/app/quill-ai-book-reader/id6762075206)

This application enhances your reading experience by providing AI-powered definitions, translations, and contextual explanations for any word or passage within your imported EPUB and PDF books. It offers instant insights to deepen comprehension.

**Highlights:** AI-powered explanations, Instant definitions, Contextual understanding, Import EPUB and PDF, Word and passage lookup

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

**In-app purchases:** none


## Frequently asked questions

### Is tsundoku reader free?

tsundoku reader is free to download, with no in-app purchases.

### Is Quill free?

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

### Which has better reviews, tsundoku reader or Quill?

tsundoku reader and Quill are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do tsundoku reader or Quill have ads?

Neither tsundoku reader nor Quill shows ads.

### Which is updated more often, tsundoku reader or Quill?

tsundoku reader ships an update every 5 months, and Quill every 9 days. Most recently, tsundoku reader was updated on October 24, 2026 and Quill on October 23, 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.*