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Best Calibre Sync Apps

250+ iOS apps curated and reviewed

4.2 avg rating
19 free apps
Updated September 2026

Out of 250+ calibre sync apps on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Calibre Sync Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Calibre SyncCalibre Sync$4.993.9★ (54)NoNoSep 2026
2Calibre ViewCalibre ViewFree5.0★ (4)NoNoJul 2026
3Calibre CompanionCalibre CompanionFree3.2★ (312)YesYesSep 2026
4Calibre ConnectorCalibre ConnectorFree2.4★ (13)NoNoJun 2026
5Resilio SyncResilio SyncFree4.5★ (844)YesNoSep 2026
6DejaOffice CRM with PC SyncDejaOffice CRM with PC SyncFree3.8★ (72)NoNoAug 2026
7PO SyncPO SyncFree——NoMay 2026
8Amazon Kindle: Reading AppAmazon Kindle: Reading AppFree4.9★ (5.8M)NoNoSep 2026

Top Picks for Calibre Sync

Calibre Sync#1

Calibre Sync by DUONG THUY PHAM

All in one Calibre libraries
Editor's Choice
🔧 Utilities
3.9(54 ratings)
$4.99
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Access and manage your Calibre ebook libraries from various cloud services or wirelessly connect to your desktop. Browse, search, download, and organize your books on your device. Supports multiple libraries and accounts.

Calibre View#2

Calibre View by DANIEL EDWARD LAMSON

Mobile Calibre Library
Strong Contender
📚 Books
5.0(4 ratings)
Free
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Browse and manage your Calibre ebook library on iOS devices. Connect to cloud storage or local files for fast searching, sorting, and filtering. Optimized for large collections and works offline once downloaded.

Calibre Companion#3

Calibre Companion by Gold Tree Consulting LLC

Worth Considering
📚 Books
3.2😞(312 ratings)
FreeAdsIn-App Purchases
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This app organizes your ebook library on your device, emulates a device for WiFi connections to your main library, and acts as a content server client for cloud storage. It allows you to view book metadata, sort and group books, mark them as read, and launch your preferred reader app.

What We Love

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

Room to Improve

  • 🐛 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)

More Calibre Sync apps to explore

FAQ about Calibre Sync

What are the best calibre sync apps for iPhone?
Calibre Sync tops our calibre sync apps ranking as of September 2026, with a 3.9-star average from 54 App Store ratings, and it's priced at $4.99.
Yes — 19 of the top calibre sync apps we rank are free to download, including Calibre View and Calibre Companion.
Calibre Sync has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 250+ calibre sync apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
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.
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.