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Best Calibre Companion Apps & Games

183+ iOS apps & games curated and reviewed

4.1 avg rating
18 free apps & games
Updated May 2026

If you already know Calibre Companion, this is the deeper bench. 183+ calibre companion apps and games for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.

Top Picks for Calibre Companion

Calibre Companion#1

Calibre Companion by Gold Tree Consulting LLC

Editor's Choice
📚 Books
3.1😞(305 ratings)
FreeIn-App Purchases
Calibre Companion screenshot 1
Calibre Companion screenshot 2
Calibre Companion screenshot 3
Calibre Companion screenshot 4
Calibre Companion screenshot 5

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
PocketBook Reader#2

PocketBook Reader by Pocketbook International SA

PDF, EPUB, FB2, Audiobooks
Strong Contender
📚 Books
4.5😐(8.8K ratings)
FreeIn-App Purchases
PocketBook Reader screenshot 1
PocketBook Reader screenshot 2
PocketBook Reader screenshot 3
PocketBook Reader screenshot 4
PocketBook Reader screenshot 5
PocketBook Reader screenshot 6

This app is a versatile reader supporting 26 book and audio formats, including EPUB, PDF, and audiobooks. It offers features like PDF reflow, text-to-speech, cloud synchronization, and extensive customization options for a comfortable reading experience.

What We Love

  • 👍 Convenient reading experience
  • 🚀 Smooth scrolling
  • 💡 Customizable settings (font, margin, etc.)
  • 🔒 Supports DRM-protected content

Room to Improve

  • 🐛 Crashes and freezes
  • 🐛 Unreliable cloud sync
  • 🐛 Inconsistent page rendering

More Calibre Companion apps to explore

4
Calibre Sync
Calibre Sync
Calibre Sync
All in one Calibre libraries
$4.99

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.

Access Calibre libraries on cloud servicesWireless connection to CalibreSupports multiple libraries and accounts
🔧 Utilities
(53)
paid
5
The Ebook Converter
The Ebook Converter
The Ebook Converter
Convert EPUB, MOBI, PDF, AZW3
Free

Easily convert ebooks between numerous formats like EPUB, MOBI, and PDF. Simply select your file, choose an output format, and convert in seconds. Save, share, or open converted files in your preferred reader apps.

Convert between major ebook formatsSupports EPUB, MOBI, PDF, TXT, AZW3, and moreFast conversion in seconds
🔧 Utilities
(2.4K)
freemium
6
KyBook 3 Ebook Reader
KyBook 3 Ebook Reader
KyBook 3 Ebook Reader
Epub, Mobi, Djvu and More
Free

This app is a versatile e-book reader and cataloger supporting numerous formats like EPUB, MOBI, and PDF. It offers a comfortable reading experience with customizable options, powerful annotation tools, and seamless cloud storage integration. Organize your library with tags, collections, and a handy cataloguer.

Supports all major e-book formatsOPDS catalog accessComfortable reading mode with themes
📚 Books
(4.2K)
free with in-app purchases
7
Calibre Biometrics
Calibre Biometrics
Calibre Biometrics
by BreathTaking Tech LLC
Free

This app pairs with a wearable device to track and analyze key metabolic and performance metrics like VO2 Max and resting metabolic rate. It provides detailed insights into your body's energy expenditure and fat burning zones. Designed for informational and educational use, it complements professional health guidance.

View biometric dataRecord metabolic informationAnalyze VO2 Max
💪 Health & Fitness
(0)
free
8
Calibre Firmware Updater
Calibre Firmware Updater
Calibre Firmware Updater
Update your Calibre
Free
💪 Health & Fitness
(0)
9
Battery HD+
Battery HD+
Battery HD+
+full calibration
Free

This app provides a detailed battery monitoring experience for your phone or tablet. It offers calibration features for increased accuracy and displays estimated usage times for various activities, from listening to music to GPS navigation. It also includes charge alerts and a widget for quick access to information.

Battery calibrationUsage time estimatesCharge alerts
🔧 Utilities
(2.6K)
ad-supported
10
The First Descendant Companion
The First Descendant Companion
The First Descendant Companion
Official App for Your Play
Free

Enhance your gameplay outside the game with real-time information on your characters, items, and research progress. Manage requests, track progress, and receive important updates and announcements directly on your mobile device.

Real-time game informationCheck Descendant and item detailsStart and track Research Requests
🎬 Entertainment
(80)
free with in-app purchases
11
Lios Calibre Viewer
Lios Calibre Viewer
Lios Calibre Viewer
Mobile Calibre Book Reader
$2.99

Access and read your entire book collection from your computer on your iPad or iPhone. Organize books by category and download them for offline reading, saving device space. Browse your library quickly with locally stored book names and cover art.

Stream Calibre libraryDownload books for offline readingOrganize books by category
📚 Books
(3)
paid
12
KOAT Action 7 News
KOAT Action 7 News
KOAT Action 7 News
Albuquerque News and Weather
Free

Stay informed with breaking news and local updates from Albuquerque and surrounding areas. Get real-time weather forecasts, interactive radar, and submit your own news tips and media.

Breaking news alertsLive streaming news updatesLocal news submission
📡 News
(3.2K)
ad-supported
13
Everand: Audiobooks & Ebooks
Everand: Audiobooks & Ebooks
Everand: Audiobooks & Ebooks
Audiobooks, ebooks, podcasts
Free

Access millions of audiobooks, ebooks, and podcasts with a reading subscription. Enjoy content across devices, online and offline, with customizable features for both reading and listening. Explore diverse genres and bestsellers with flexible monthly plans.

Millions of audiobooks and ebooksOffline accessCross-device compatibility
📚 Books
(27K)
subscription
14
Calibrate - Metabolic Health
Calibrate - Metabolic Health
Calibrate - Metabolic Health
Weight Loss Results That Last
Free

This app supports a comprehensive weight loss program focused on metabolic health. It provides access to clinician-prescribed medication, personalized video coaching, daily tracking tools, and educational content to foster sustainable lifestyle changes for long-term results.

Clinician-prescribed GLP-1 medication1:1 video coaching sessionsDaily progress tracking
💪 Health & Fitness
(4.7K)
free
15
Gymverse: Gym Workout Planner
Gymverse: Gym Workout Planner
Gymverse: Gym Workout Planner
Weight Lifting Fitness Trainer
Free

This AI-powered fitness trainer creates personalized, multi-week workout plans that adapt to your progress and goals. It offers expert video guidance for each exercise, tracks your progress visually, and provides motivational insights. Enjoy tailored workouts that avoid disliked or injured areas, with options for strength training, cardio, and more.

AI-generated personalized workout plansAdaptive training based on progressExpert video exercise guidance
💪 Health & Fitness
(164K)
free with in-app purchases
16
KyBook 2 Ebook Reader
KyBook 2 Ebook Reader
KyBook 2 Ebook Reader
EPub, MOBI, DjVu and More
Free

This app is a versatile e-book reader that supports a wide range of formats including EPUB, MOBI, and PDF. It offers extensive customization for reading modes, cloud storage integration, and text-to-speech capabilities for audiobooks.

Supports EPUB, MOBI, PDF, DJVU, and moreOPDS catalog and cloud storage integrationCustomizable reading modes (font, theme, size)
📚 Books
(2.3K)
free with in-app purchases
17
ISS Vanguard Companion
ISS Vanguard Companion
ISS Vanguard Companion
An official companion app
Free

Enhance your board game experience with a fully voiced narrative, immersive music, and special effects. This app automatically tracks your choices, replacing physical logbooks for a seamless playthrough.

Fully voiced narrativeImmersive music and sound effectsAutomatic choice tracking
🎮 Games
(23)
free
18
Storytel - Audiobooks Library
Storytel - Audiobooks Library
Storytel - Audiobooks Library
Audio Books & Reading App
Free

Access a vast library of audiobooks and ebooks in various languages. Listen or read at your own pace, discover new stories, and enjoy exclusive content. Features include offline listening, personalized recommendations, and a dedicated kids mode.

Massive audiobook and ebook libraryPersonalized recommendationsOffline listening and reading
📚 Books
(11K)
subscription
19
Blinkist: Book Summaries Daily
Blinkist: Book Summaries Daily
Blinkist: Book Summaries Daily
Listen. Read. Learn.
Free

Access key insights from thousands of top books and podcasts in short audio and text summaries. Turn your commute or chores into learning opportunities to boost your career or personal growth. Over 39 million people use this app to read and learn faster.

8,000+ book and podcast summaries15-minute learning sessionsDaily microlearning
📚 Education
(151K)
free with in-app purchases
20
Structure Sensor Calibrator
Structure Sensor Calibrator
Structure Sensor Calibrator
by XRPro, LLC
Free

This utility app precisely aligns 3D depth data from a Structure Sensor accessory with your iOS device's camera. It enhances full-color 3D scanning and optimizes performance in related applications. The calibration process is quick and saves results directly to the accessory.

Aligns 3D depth dataEnhances full-color 3D scanningOptimizes sensor performance
🔧 Utilities
(4)
free