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 (
Privacy Policy:
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.

What’s New

Version 2.0.15

-Fixed content server book issue
-Fixed custom port issue

Ratings and Reviews

3.3 out of 5
234 Ratings

234 Ratings

JakeUsernameIsTaken ,

Subscription Methodology

I don’t think subscription is the appropriate model for this app. My stuff is stored in OneDrive, so I view this app as a portal to access my existing content that I could easily just access by opening OneDrive itself. Tweetbot used to do it so you would pay $5 for each new installment of the app (version 2, version 3, version 4) instead of a monthly subscription. I like and appreciate Calibre and hope the devs get paid but that’s just my two cents. I’d gladly pay a $5-10 one time fee every time the app gets a big upgrade.

The only thing I don’t like about the app is how I have to tell it to open OneDrive every time I want to reconnect. I only have one library, so I wish it was automatic.

Mindonly0 ,

For what it’s worth

Like the majority of the recent posts and reviews on this app, I am greatly disappointed with the developers decision to go subscription! I have been using calibre library on my laptop, and Calibre companion on my iPad and iPhone for many years having paid for and appreciated it’s simplicity and flexibility.

I am simply disenfranchised by this and so many other applications which in recent times, developers have decided to, Basically take advantage of those who have respectively purchased an application in a market please where virtual commodities seem to imply that the consumer has less rights to propriety subsequent to purchase then in a typical brick and mortar commodities industry.

It is time that Apple or the App Store take the lead in a market place where regulations are still significantly lagging and either antiquated or inappropriate , in the rapidly changing virtual market place, and develop policies that protect the consumer of their commodities and hold vendors to the usual implied contractual responsibility to their consumers. Consideration could be given to how “possession” is defined and perhaps those who have previously purchased and now “possess” an application on their device can, by way of a grandfather clause, be protected from back end coercion into subscription charges that we’re not part of the original purchase terms and agreement.

Sorry Calibre for the rant, but you deserve it!

chad_fitz ,

Keyboard Covers Up Fields/Buttons, No Way to Resolve

When trying to input server data, the keyboard covers up the buttons and fields, preventing you from seeing or selecting covered fields or even clicking ‘OK’ to confirm your entry.

Also, unless you’re going to pay a subscription for what largely appears to be an app with the same functionality as the free web page created by Calibre for accessing books on the server (which works great in iOS except for the constant need to re-enter credentials as though I was accessing a financial account), you’ll be confronted with annoying ads for the paid version every time you open the app. I might consider paying if it was a one-time fee, but a subscription model is for me, like with most things, out of the question. I’d rather pay $200 once than $5 per month—I don’t want to have to remember the charge, and I want to have something approximating genuine ownership of the things that I buy.

Developer Response ,


We are sorry to hear about the server data issue, can you send us a screenshot of what you mean at We want to help resolve this issue.

As stated in our support form, the development and continuous progress of CC is dependent on the subscription. If paying $1 dollar a month to support our team is too much we are sorry to hear that.

App Privacy

The developer, Gold Tree Consulting LLC, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


Gold Tree Consulting LLC
117.6 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
In-App Purchases
  1. Calibre Companion $1.99
  2. Calibre Companion $14.99
  3. Yearly Subscription $14.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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