# Calibre Sync — All in one Calibre libraries > Cloud and wireless access for Calibre ebook libraries on mobile devices. (iPhone/iPad app by DUONG THUY PHAM.) - Source: https://appshunter.io/ios/app/calibre-sync/id1609138078 (this page in markdown: same URL + `.md`) - Developer: [DUONG THUY PHAM](https://appshunter.io/developer/1795008858) - Category: Utilities, Productivity - Price: $4.99 - Rating: 3.93/5 from 54 App Store ratings · 80 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 136 MB - Languages: English - Released: 2022-02-16 - Data updated: 2026-08-24 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/calibre-sync/id1609138078/reviews.md ## What is Calibre Sync? Lifetime support, no extra charge, no subscription fee. Calibre Sync can: - help you access full Calibre libraries on most popular personal cloud services, including Google Drive, Dropbox, Microsoft OneDrive, Box, pCloud, MEGA, iCloud, WebDav, Nextcloud, OwnCloud, and TeraBox - simply the most supported for cloud services. - transform your device to a smart device emulator that connects to Calibre wirelessly. It even supports Calibre libraries on your external storage and from Calibre Content Server or Calibre-web with amazing performance. Move your Calibre libraries to your favourite cloud providers and access those libraries via Calibre Sync to browse, sort, search, download and read books on your device. Calibre Sync also supports multiple libraries across multiple Drive, Dropbox, OneDrive, Box, pCloud, MEGA, iCloud, WebDav, Nextcloud, OwnCloud, and TeraBox accounts simultaneously. Features: - Unlimited Calibre libraries - Wireless connect to Calibre effortlessly as Smart device - Easy switch between multiple libraries across multiple accounts - Automatic check and update libraries when launching the app - Pull, Refresh or Remove a library from Calibre Sync - Support different book list layouts: List - detailed and simple, Grid, and Carousel - View your library statistics - Send books to Kindle with ease - Search across all of your available libraries - Search books by title, authors, and even in comments and custom columns - Filter books on authors, series, tags, language, publishers, formats and in custom columns - Sort libraries by title, author, ratings, and several Date options - ascending and descending - Filter downloaded books - Configuration for each library download location - Support for custom columns in book details view - Quick access to book download and share via slideable list view - Zoom the book cover - Support "swipe from book to book" in book details view - Email or share a copy of downloaded book - Open downloaded book in your book reader application to read a book - View the file size of each book format - Show book identifiers and link to source (like ISBN, Amazon, Google Books, Goodreads, etc) - Dark/light themes - And many more features... To move your Calibre library to cloud services: 1) Open Calibre on your Laptop/PC/Desktop 2) Select "Switch/create library..." from the Calibre menu 3) Select an empty folder on your Cloud drive in "New Location" drop down 4) Select "Move current library to new location", then press OK 5) Wait for cloud sync to complete. 6) Then you are ready to use Calibre Sync. To move your Calibre library to your phone storage, just copy the library directory to your phone storage. Notes: - Calibre Sync is not a reader app. You must install and use one of the many excellent reader apps available. - Only Microsoft OneDrive for Personal accounts (shared) are supported. Please email us if you observe any inconsistencies. - Due to restriction in Box API, Calibre Sync must acquire write permission in order to download files, download is not a read action on Box. Calibre Sync guarantees that it will not perform any write actions against your data in Box cloud account. - Calibre Sync use WebDav API of Nextcloud and OwnCloud services, and it requires case sensitive file system to work properly. Therefore, you must make sure that your libraries are set up on case sensitive file system (Linux, recent MacOS, Windows NTFS with case sensitive enabled). Please leave your reviews and suggestions to help us improve the app. For more information see https://calibresync.bitbucket.io Calibre is © Kovid Goyal - calibre-ebook.com Drive is © Google LLC. Dropbox is © Dropbox inc. OneDrive is © Microsoft Box is © Box inc. pCloud is © pCloud AG Nextcloud is © Nextcloud GmbH OwnCloud is © OwnCloud MEGA is © MEGA iCloud is © Apple Inc TeraBox © Flextech Inc ## Key features - Access Calibre libraries on cloud services - Wireless connection to Calibre - Supports multiple libraries and accounts - Browse, search, and download books - Organize books with filters and sorting - Send books to Kindle ## Recent user reviews (10 of 80) All indexed reviews: https://appshunter.io/ios/app/calibre-sync/id1609138078/reviews.md ### 5/5 — Finally *2026-08-07* Update 2: It’s working again and I can’t rate the new dev highly enough for knowing there was a niche that needed to be filled and picking up the torch. Thank you for seeing the value in this. Update: Calibre version 9 bricked it, if you absolutely rely on this app stay on the latest version of 8, doesn’t look like anyone’s seen a developer response for a fix in a few weeks now. Brilliant 5 star app, really hoping the dev returns to it. There’s a few things I’ve learned in all my time spent meticulously curating, indexing, and cataloging my library through calibre and one of those is that certain file types, regardless of what you assign them in Calibres own metadata fields, do not hold certain types of metadata. So PDFs (and irritatingly enough, CBR/Zs) aren’t capable of being organised by series in e-readers. They also struggle with cloud syncing in the way that while they sync physical files, they won’t just show what you have in your cloud for download, and they certainly don’t keep that organised either. CalibreSync completely solves these issues by not only mirroring your calibre library the way you’ve designed it, but also by making your collection viewable and searchable without needing physical copies of the files on your device (via cloud syncing), and downloadable on demand, whilst still being able to scroll through them all in an easily accessible catalogue of your own design. You can even open your books from here into your chosen e-reader. This is exactly the type of app I needed, and well worth the payment. ### 5/5 — Excellent *2026-07-19* Permet d’avoir sur son iPhone une ou plusieurs bibliothèques Calibre accessibles car stockées dans un service cloud. Permet de récupérer un/plusieurs livres et les ouvrir dans son lecteur favori. Bien sûr fonctionne en « lecture seule » sur le service cloud. Pas d’écriture vers le cloud. ### 5/5 — Great app. Works well. *2026-07-16* It worked great to connect to my Calibre library. Syncs easily and gives me a great way to browse through my collection. ### 5/5 — Calibre Sync funktioniert wieder, vielen Dank! *2026-07-05* Calibre Sync funktioniert wieder, vielen Dank! **Developer response:** Hi, the new version of the app should fix the issue, please check it out, cheers. ### 5/5 — Works again! *2026-07-03* Very fast and efficient way to get books from your Calibre installation. **Developer response:** Hi, the new version of the app should fix the issue, please check it out, cheers. ### 5/5 — New dev fixed the app! *2026-07-03* Thanks to the new dev, this app works great again **Developer response:** Hi, the new version of the app should fix the issue, please check it out, cheers. ### 5/5 — Works with calibre 9 *2026-05-20* For anyone looking, the app has recently been taken over by a new developer and I can confirm it works now with calibre 9 — specifically I have my library in iCloud Drive, and everything does sync in and is accessible without issue. I would love a bit more customizability with the viewing options, but this does do everything in terms of displaying the library and being able to filter and download books without needing my computer on and running the content server in order to access my books on another device with all the metadata attached. ### 5/5 — New developer *2026-05-19* Now being supported again, great news excellent app. A must have if you have Calibre. ### 4/5 — Mostly great except the popup you can’t get rid of *2026-05-18* Notice reappears every launch even without configured cloud accounts/keychain use.” **Developer response:** Hi, You can dismiss that notice, after that, it will not show again. Cheers ### 5/5 — Parfait compagnon pour Calibre *2026-04-05* Vraiment génial pour avoir un accès à sa bibliothèque Calibre depuis n’importe où ! Fonctionne parfaitement avec calibre v9 (ou v8). ## Frequently asked questions about Calibre Sync ### What does Calibre Sync do? Calibre Sync allows you to access and manage your Calibre ebook libraries from popular cloud services like Google Drive, Dropbox, and OneDrive, or connect wirelessly to your desktop Calibre installation. You can browse, search, download, and organize your books directly on your mobile device. ### How do I move my Calibre library to a cloud service for use with Calibre Sync? To move your library, open Calibre on your computer, select 'Switch/create library...', choose an empty folder on your cloud drive as the 'New Location', select 'Move current library to new location', and press OK. Wait for the cloud sync to complete, and then you can use Calibre Sync. ### Is Calibre Sync a free app? No, Calibre Sync is a paid application. The description mentions lifetime support with no extra charge or subscription fee, indicating a one-time purchase model. ### What devices is Calibre Sync compatible with? The app is designed for mobile devices and connects to Calibre libraries stored on cloud services or your computer. It is not a reader app itself, so you will need a separate ebook reader application installed on your device to open and read downloaded books. ### Can I use Calibre Sync to read books? No, Calibre Sync is not a reader app. Its primary function is to manage and provide access to your Calibre libraries. You will need to open downloaded books using a separate ebook reader application installed on your device. ## Version history (last 5 releases) ### 6.10.6 — 2026-08-13 - Mega service integration improvement. ### 6.10.5 — 2026-08-05 - Calibre-web service integration improvement ### 6.10.4 — 2026-07-21 - Improve UI for library filter page. ### 6.10.3 — 2026-07-18 - Calibre-web service integration improvement, now fully compatible with Calibre-Web NextGen and Calibre-Web Automated. ### 6.10.1 — 2026-07-15 - New feature! Support Story Graph and Library Thing in identifiers. - Calibre-web service integration improvement, now fully compatible with v0.6.26 - Ismara. - New UI feature! Option to wrap tags in book view page. ## Apps similar to Calibre Sync | App | Rating | Price | Category | | --- | --- | --- | --- | | [Remote for Tautulli](https://appshunter.io/ios/app/remote-for-tautulli/id1343177312) | 4.8 (2,267) | Free | Utilities | | [Nest Egg - Inventory](https://appshunter.io/ios/app/nest-egg-inventory/id431188993) | 4.4 (615) | $6.99 | Utilities | | [Varys for Plex](https://appshunter.io/ios/app/varys-for-plex/id1450380518) | 4.8 (1,417) | Free | Utilities | | [Menu Box](https://appshunter.io/ios/app/menu-box/id6463440793) | 4.7 (14) | Free | Utilities | | [Astrysk](https://appshunter.io/ios/app/astrysk/id6450632377) | 3.0 (2) | Free | Utilities | | [Ovue for Seerr](https://appshunter.io/ios/app/ovue-for-seerr/id6581485306) | 3.0 (4) | $1.99 | Utilities | ## Related topics [calibre sync](https://appshunter.io/ios/topics/calibre-sync) · [calibre companion](https://appshunter.io/ios/topics/calibre-companion) --- *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.*