# Calibre Companion

> Ebook library organizer, device emulator, and cloud content server client for Calibre. (iPhone/iPad app by Gold Tree Consulting LLC.)

- Source: https://appshunter.io/ios/app/calibre-companion/id1171161691 (this page in markdown: same URL + `.md`)
- Developer: [Gold Tree Consulting LLC](https://appshunter.io/developer/1470813324)
- Category: Books, Utilities
- Price: Free with in-app purchases
- Rating: 3.20/5 from 311 App Store ratings · 192 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 112 MB
- Languages: American English
- Released: 2016-11-07
- Data updated: 2026-08-24
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/calibre-companion/id1171161691/reviews.md

## What is Calibre Companion?

Calibre Companion (CC), recommended by calibre developers, is three applications in one:
- a superb device-based calibre library organiser
- a high-performance WiFi-based calibre device emulator
- a calibre content server and cloud provider client (Dropbox and Microsoft OneDrive)

1) CC is a device-based calibre library organiser. Once you put books on your device using one of the connection methods described below you can:
- view a book's metadata (author, tags, series, rating, dates, etc.).
- sort and group books by their metadata.
- see book lists by cover or by list.
- mark books read and sync this information with calibre.
- launch your book reader application to read a book

2) CC can connect to calibre over WiFi and be detected by calibre as a device. Once connected, you use calibre to move books to and from your device. Calibre automatically updates all the book metadata stored by CC to match the latest in your library.

3) CC can connect to calibre’s content server or to your cloud provider to browse your library and download books to your device. Supports Dropbox and Microsoft OneDrive.

For more information see our FAQ (http://cc_faq.multipie.co.uk/)
Privacy Policy: http://faq.calibrecompanion.co/index.php?solution_id=1077
Terms of Service: https://calibrecompanion.co/terms-of-service/

Notes: CC is not a reader app. You must install and use one of the many excellent reader apps available. You must also already use calibre to manage your library of ebooks.

## Key features

- Device-based library organizer
- WiFi-based device emulator
- Content server and cloud client
- View and sort book metadata
- Mark books as read
- Sync read status with Calibre

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Calibre Companion | $14.99 | per year |
| Calibre Companion | $1.99 | per month |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $14.99 | per year |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $14.99 | per year |


## What do users think of Calibre Companion?

Overall sentiment: negative

**Pros**

- 🚀 Easy to use
- 🚀 Seamless integration with Calibre
- 👍 Useful for organizing ebook library
- 👍 Convenient access to books on mobile devices

**Cons**

- 🐛 Bugs and glitches after updates
- 💰 Subscription model introduced for existing users
- 📢 Intrusive advertisements even for paid users
- 🔒 Lack of security/privacy features (e.g. 2FA)

**Commonly reported bugs**

- Inability to connect to Calibre content server
- Books disappearing from library after updates
- Syncing issues between app and Calibre library
- Compatibility problems with newer iOS versions

**Most requested features**

- Bulk download/transfer of books
- Built-in ebook reader functionality
- Support for more cloud storage services
- Improved sorting and filtering options

## Recent user reviews (10 of 192)

All indexed reviews: https://appshunter.io/ios/app/calibre-companion/id1171161691/reviews.md

### 1/5 — They ruined this app

*2026-03-27, version 2.0.15*

This was once an excellent app, but the greedy jerks who make it have added the World’s Most Annoying ads, holding you hostage for fixed amounts of time before you can view details about your books while they force-feed you horrible, tedious, annoying ads.
I will be looking for a replacement for this app ASAP.

### 4/5 — Good app - needs some tweaks?

*2026-03-06, version 2.0.15*

Authentication using OneDrive with MFA causes the app to reset each time you click away to use authenticator app.   So it is clunky getting in using other 2fa methods.   

Also, .m4b files need to be added to the supported formats list.

### 1/5 — Doesn’t work

*2026-02-27, version 2.0.15*

Tried to use to download books from my local Calibre server. UI sucks and downloading books failed.

### 4/5 — It’s working

*2026-01-16, version 2.0.15*

I don’t know if there was a recent update, but it is working well now. Glad I kept it installed. The interface is a little clunky but I found my way around. I appreciate the free version and may upgrade to get compatibility with Google Drive.

### 5/5 — Best App Ever

*2025-12-01*

Easy to use. Seamless. Plus they gave me a 6 month trial. Hoorah!

### 1/5 — Marred by advertisements

*2025-10-27*

This app connects well and is easy to upload your library , sadly I had to delete it after just a few hours. The problem lies when you actually try to read a book because there is way too much advertising, it makes it almost unusable

### 1/5 — Abandoned app

*2025-06-21, version 2.0.15*

I had automatic renewal enabled, but once renewed, ads showed up in the app and I found out it had been abandoned.

### 1/5 — 100 TL ye çok ihtiyaçları var mutlaka satın alın.

*2025-05-21, version 2.0.15*

Deneme süresi koymuşlar buna güvenmeyin. Denemeden parayı cebe indiriyorlar. Daha önceden denemiş olmamama rağmen. İki kere iade talebi yapmama rağmen. Neyse zorla sattılar bana şimdi kullanacağım

### 1/5 — No iCloud Drive support

*2025-05-20, version 2.0.15*

I already have my entire Calibre library right here on my phone, synced from iCloud, and browsable from my Files. Any app that bothers to try is able to load and view these files, but this app appears to have no concept at all of local files.

Why would I want to connect a Dropbox or OneDrive account to do something that’s already built into every iPhone for free, and does it better?

### 1/5 — 不用下载了，跟电脑同步不成功

*2025-03-24*

电脑今天都更新了，手机版本还是4年前，电脑分享的网页都能打开试用，这app打不开分享的网页地址，没办法同步

## Frequently asked questions about Calibre Companion

### What does Calibre Companion do?

Calibre Companion (CC) acts as a device-based ebook library organizer, a high-performance WiFi-based Calibre device emulator, and a client for Calibre's content server or cloud storage providers like Dropbox and Microsoft OneDrive. It allows you to manage your books, view metadata, and sync reading status.

### How does this app connect to my Calibre library?

CC can connect to your Calibre library over WiFi, where Calibre detects it as a device, allowing you to move books to and from your device. It also supports connecting to Calibre's content server or cloud providers to browse and download books.

### Is this app free to use?

The app is free to download and use, but it offers in-app purchases. This suggests that some features or advanced functionalities might require a purchase to unlock.

### What devices is Calibre Companion compatible with?

The description does not explicitly state compatibility with specific operating systems (e.g., Android, iOS) or device models. However, it is designed to work with devices that can run reader applications and connect to WiFi.

### Can I read books directly within Calibre Companion?

No, Calibre Companion is not a reader app. You will need to install and use a separate ebook reader application on your device to read the books managed by CC.

## Version history (last 5 releases)

### 2.0.15 — 2020-10-09

-Fixed content server book issue
-Fixed custom port issue

### 2.0.14 — 2020-10-06

-bug fixes and improvements

### 2.0.13 — 2020-09-01

-Google Drive Cloud Connection available now
-Removed subscription screen showing every time
-Bug fixes

### 2.0.8 — 2020-07-04

1. Pushing quick fix in new version

Old release notes:

1. New on-boarding flow for getting started
2. iPad grouping and sorting UI/UX spacing improved
3. Getting started guide in top right of app home page
4. Series tag shows on sorting
5. Bug fixes

### 2.0.7 — 2020-07-01

1. Pushing quick fix in new version

Old release notes:

1. New on-boarding flow for getting started
2. iPad grouping and sorting UI/UX spacing improved
3. Getting started guide in top right of app home page
4. Series tag shows on sorting
5. Bug fixes

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## Related topics

[calibre companion](https://appshunter.io/ios/topics/calibre-companion) · [calibre sync](https://appshunter.io/ios/topics/calibre-sync) · [calibre](https://appshunter.io/ios/topics/calibre) · [calibre ebook](https://appshunter.io/ios/topics/calibre-ebook)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*