# Calibre Connector vs Readest

The clearest difference is review sentiment: Readest at 84% against Calibre Connector's 23%. Readest also leads on rating (4.5 vs 2.4) and ratings volume (191 vs 13). Calibre Connector's advantage is in-app purchases (none vs 9) and update cadence (every 4 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Readest sells 9 in-app purchases, starting at $4.99 per month. Calibre Connector asks for nothing beyond the download.

Readest holds the better App Store score, 4.5 against 2.4. That said, the two scores are not equally well evidenced: Readest has 191 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 23% of Calibre Connector's written reviews are positive against 84% of Readest's.

Calibre Connector ships an update every 4 days, Readest fortnightly. The most recent releases landed on October 7, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Calibre Connector | Readest |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (13 ratings)](https://appshunter.io/ios/app/calibre-connector/id6477761553/reviews) | **[4.5 (191 ratings)](https://appshunter.io/ios/app/readest-ebook-reader/id6738622779/reviews)** |
| Number of ratings | 13 | **191** |
| Positive reviews | 23.1% of reviews | **84.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 58 MB |
| Requires iOS | 17.2 | **16.4** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Phillip Walker](https://appshunter.io/developer/1723891603) | [Bilingify LLC](https://appshunter.io/developer/1781524090) |

## What reviewers say

### Calibre Connector

[App page](https://appshunter.io/ios/app/calibre-connector/id6477761553)

This application facilitates the transfer of book information from the Calibre software to your Apple device. It enables easy access to your digital library on the go.

**Highlights:** Download Calibre information, Sync to iDevice, Access digital library, Supports iPhone and iPad

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

**In-app purchases:** none


### Readest

[App page](https://appshunter.io/ios/app/readest-ebook-reader/id6738622779)

This app is a powerful ebook reader designed for deep thinkers and researchers. It offers advanced annotation tools, seamless device syncing, and robust library management with OPDS and Calibre support. Enjoy a distraction-free reading experience with customizable modes and multi-book viewing for enhanced study and analysis.

**Highlights:** OPDS Online Libraries, Calibre Integration, Sync Across Devices, Bookshelf Management, Customizable Reading Modes, Multi-Book View, Advanced Annotations & Highlights

**Features:** Family Sharing, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscribe to Plus Plan | $4.99 | per month |
| Subscribe to Pro Plan | $9.99 | per month |
| Subscribe to Plus Plan | $49.99 | per year |
| Subscribe to Pro Plan | $99.99 | per year |
| 1 GB | $9.99 | one-time |
| 2 GB | $14.99 | one-time |
| Full Customization | $19.99 | one-time |
| 5 GB | $29.99 | one-time |
| 10 GB | $49.99 | one-time |


## Frequently asked questions

### Is Calibre Connector free?

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

### Is Readest free?

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

### Which has better reviews, Calibre Connector or Readest?

Readest is rated higher. Calibre Connector averages 2.4 out of 5 from 13 ratings, while Readest averages 4.5 from 191 ratings.

### Do Calibre Connector or Readest have ads?

Neither Calibre Connector nor Readest shows ads.

### Which is updated more often, Calibre Connector or Readest?

Calibre Connector ships an update every 4 days, and Readest fortnightly. Most recently, Calibre Connector was updated on October 7, 2026 and Readest on October 20, 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.*