Comparison

Calibre Companion vs Codex Reader Early Access

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Calibre Companion

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.

Highlights
  • 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
Features
Read full description

Bring your calibre library to your iPhone and iPad. Calibre Companion helps you browse, organize and transfer the books you already own. CONNECT YOUR LIBRARY Connect to calibre on your computer over Wi-Fi as a wireless device, browse a calibre Content Server, or access a calibre library stored with a supported cloud provider, including Dropbox, Google Drive and OneDrive. MAKE YOUR COLLECTION EASY TO EXPLORE Browse covers or a compact book list. Search as you type, sort your collection, and filter by authors, tags, series and other metadata. View book details and keep track of your reading state. TAKE YOUR BOOKS WITH YOU Download books to your device and open them in a compatible reader app. Calibre Companion organizes and transfers books; it is not an ebook reader and does not include books. OPTIONAL PREMIUM SUBSCRIPTION An active subscription removes ads and unlocks Premium. Existing books and the free library remain available without subscribing. An active subscription is required for Premium and ad-free access, including for previous purchasers. Subscriptions renew automatically unless canceled in your Apple account. Prices, billing periods and any eligible introductory offer are shown before purchase. Manage or cancel your subscription in your Apple account settings. Use calibre on your computer to manage your library. Wireless connections require a reachable computer with the corresponding calibre service enabled. Cloud browsing requires your own account and a calibre library stored with the provider. Calibre Companion is an independent app and is not affiliated with the calibre desktop project. Support: https://calibre-companion-website.replit.app/support Privacy Policy: https://calibre-companion-website.replit.app/privacy Terms of Use: https://calibre-companion-website.replit.app/terms Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Codex Reader Early Access

Features
Read full description

Codex Reader turns the books you already own into one library you can read and listen to. Connect your own sources — Plex, Audiobookshelf, OPDS catalogs, and Storyteller — or bring files straight in from the Files app. Your EPUBs, M4Bs, and MP3 audiobooks all land in a single shelf. READ AND LISTEN, TOGETHER Readalouds keep the text and the narration in sync, highlighting each line as it's spoken. Switch between reading and listening whenever you like and pick up exactly where you left off. BUILT FOR iOS CarPlay for the drive. Siri and Spotlight to jump straight into a book. Home Screen widgets and a Live Activity for what you're in the middle of. Everything works offline once downloaded. MADE YOURS Choose your app icon, tune typography and playback to taste, organize shelves and reading lists, and follow authors or servers to hear about new arrivals. Codex Premium adds iCloud sync so your place in a book follows you between devices.

Screenshots

Calibre Companion4 screens
Codex Reader Early Access4 screens

Verdict

The call

The clearest difference is ads: Codex Reader Early Access at none against Calibre Companion's shown. Codex Reader Early Access also leads on update cadence (weekly vs every 5 weeks). Calibre Companion's advantage is iOS requirement (13.0 vs 16.4). On price, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calibre Companion sells 6 in-app purchases, starting at $1.99 per month and Codex Reader Early Access sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Calibre Companion ships an update every 5 weeks, Codex Reader Early Access weekly. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
Calibre Companion versus Codex Reader Early Access: the parameters behind the verdict, then further details
ParameterCalibre CompanionCodex Reader Early Access
PriceFreeFree
Rating3.2 (313 ratings) — better—
Positive reviews36.6% of reviews—
Number of ratings313 — better—
Update frequencyEvery 5 weeksWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.4
Further details — not scored
Size66 MB104 MB
Age rating4+4+
DeveloperGold Tree Consulting LLCCameron Green

Bugs and requests

Calibre Companion

Reported bugs

4 issues
  • 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

Requested features

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

Codex Reader Early Access

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Calibre Companion

Subscriptions6
  • Calibre Companion7 Days trial$1.991 Month
  • Monthly Subscription6 Months trial$1.991 Month
  • Monthly Subscription$1.991 Month
Show 3 more
  • Calibre Companion7 Days trial$14.991 Year
  • Yearly Subscription6 Months trial$14.991 Year
  • Yearly Subscription$14.991 Year
1 purchases

Codex Reader Early Access

One-time1
  • Codex Premium$6.99

Questions

Is Calibre Companion free?
Calibre Companion is free to download, with in-app purchases available.
Is Codex Reader Early Access free?
Codex Reader Early Access is free to download, with in-app purchases available.
Do Calibre Companion or Codex Reader Early Access have ads?
Calibre Companion shows ads; Codex Reader Early Access does not.
Which is updated more often, Calibre Companion or Codex Reader Early Access?
Calibre Companion ships an update every 5 weeks, and Codex Reader Early Access weekly. Most recently, Calibre Companion was updated on October 18, 2026 and Codex Reader Early Access on October 14, 2026.

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