# Readest vs Lios Calibre Viewer

The clearest difference is price: Readest at Free against Lios Calibre Viewer's $2.99. Readest also leads on ratings volume (196 vs 3). Lios Calibre Viewer's advantage is in-app purchases (none vs 9) and review sentiment (100% vs 84%). On rating, ads, device support and iOS requirement there is nothing between them.

Readest is free to download; Lios Calibre Viewer costs $2.99 up front. Readest sells 9 in-app purchases, starting at $4.99 per month. Lios Calibre Viewer asks for nothing beyond the download.

Readest holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Readest has 196 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 84% of Readest's written reviews are positive against 100% of Lios Calibre Viewer's, so the app with the better star average is not the one people write more warmly about.

Readest ships an update fortnightly, Lios Calibre Viewer every 5 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Readest | Lios Calibre Viewer |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.5 (196 ratings)](https://appshunter.io/ios/app/readest-ebook-reader/id6738622779/reviews)** | [4.3 (3 ratings)](https://appshunter.io/ios/app/lios-calibre-viewer/id6754184384/reviews) |
| Number of ratings | **196** | 3 |
| Positive reviews | 84.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 58 MB | 11 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bilingify LLC](https://appshunter.io/developer/1781524090) | [Antonio Torres](https://appshunter.io/developer/1799367055) |

## What reviewers say

### 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 |


### Lios Calibre Viewer

[App page](https://appshunter.io/ios/app/lios-calibre-viewer/id6754184384)

Access and read your entire book collection from your computer on your iPad or iPhone. Organize books by category and download them for offline reading, saving device space. Browse your library quickly with locally stored book names and cover art.

**Highlights:** Stream Calibre library, Download books for offline reading, Organize books by category, Quick library browsing, Save device space

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

**In-app purchases:** none


## Frequently asked questions

### Is Readest free?

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

### Is Lios Calibre Viewer free?

Lios Calibre Viewer costs $2.99, with no in-app purchases.

### Which has better reviews, Readest or Lios Calibre Viewer?

Readest is rated higher. Readest averages 4.5 out of 5 from 196 ratings, while Lios Calibre Viewer averages 4.3 from 3 ratings.

### Do Readest or Lios Calibre Viewer have ads?

Neither Readest nor Lios Calibre Viewer shows ads.

### Which is updated more often, Readest or Lios Calibre Viewer?

Readest ships an update fortnightly, and Lios Calibre Viewer every 5 days. Most recently, Readest was updated on October 28, 2026 and Lios Calibre Viewer 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.*