# iCalibre vs Lios Calibre Viewer

The clearest difference is review sentiment: Lios Calibre Viewer at 100% against iCalibre's 25%. Lios Calibre Viewer also leads on rating (4.3 vs 1.0) and update cadence (every 5 days vs every 50 months). iCalibre's advantage is iOS requirement (12.4 vs 16.0). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

iCalibre costs $4.99 and Lios Calibre Viewer $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Lios Calibre Viewer holds the better App Store score, 4.3 against 1.0. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 25% of iCalibre's written reviews are positive against 100% of Lios Calibre Viewer's.

iCalibre ships an update every 50 months, Lios Calibre Viewer every 5 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | iCalibre | Lios Calibre Viewer |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | [1.0 (3 ratings)](https://appshunter.io/ios/app/icalibre/id1480663287/reviews) | **[4.3 (3 ratings)](https://appshunter.io/ios/app/lios-calibre-viewer/id6754184384/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 50 months | **Every 5 days** |
| Monetization | Paid | Paid |
| Size | 97 MB | 11 MB |
| Requires iOS | **12.4** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Harmen Reichert](https://appshunter.io/developer/891277001) | [Antonio Torres](https://appshunter.io/developer/1799367055) |

## What reviewers say

### iCalibre

[App page](https://appshunter.io/ios/app/icalibre/id1480663287)

Access your Calibre ebook library from any device via iCloud. Search, open, and read books directly within the app, with features like stored queries and cover image viewing. Keep your entire library synchronized across your iPhone, iPad, and PC.

**Highlights:** iCloud library synchronization, Open books directly in reader, Stored queries and autosuggest search, View cover images and descriptions, Search Google for book information, Mark books for easy searching

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

**In-app purchases:** none


### 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 iCalibre free?

iCalibre costs $4.99, with no in-app purchases.

### Is Lios Calibre Viewer free?

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

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

Lios Calibre Viewer is rated higher. iCalibre averages 1.0 out of 5 from 3 ratings, while Lios Calibre Viewer averages 4.3 from 3 ratings.

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

Neither iCalibre nor Lios Calibre Viewer shows ads.

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

iCalibre ships an update every 50 months, and Lios Calibre Viewer every 5 days. Most recently, iCalibre was updated on November 3, 2026 and Lios Calibre Viewer on November 5, 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.*