# Clarify vs Quill

The clearest difference is update cadence: Quill at every 9 days against Clarify's monthly. Clarify's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

Clarify ships an update monthly, Quill every 9 days. The most recent releases landed on October 31, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Clarify | Quill |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quill-ai-book-reader/id6762075206/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | — | Free |
| Size | 37 MB | 20 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [1553050 B.C. LTD.](https://appshunter.io/developer/1879399441) | [思涵 岳](https://appshunter.io/developer/1885417868) |

## What reviewers say

### Clarify

[App page](https://appshunter.io/ios/app/clarify-ai-ebook-reader/id6759541929)

**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 Clarify free?

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

### Is Quill free?

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

### Do Clarify or Quill have ads?

Neither Clarify nor Quill shows ads.

### Which is updated more often, Clarify or Quill?

Clarify ships an update monthly, and Quill every 9 days. Most recently, Clarify was updated on October 31, 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.*