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Best Encyclopedia Offline Apps

175+ iOS apps curated and reviewed

4.0 avg rating
17 free apps
Updated July 2026

Wikipedia is the household name in encyclopedia offline, but it's far from the only option. We track 175+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Encyclopedia Offline

Wikipedia#1

Wikipedia by Wikimedia Foundation

The Free Encyclopedia
Editor's Choice
🔍 Reference
4.3😐(6.1K ratings)
Free
#100in Reference
Wikipedia screenshot 1
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Access the world's largest free knowledge base with over 60 million articles in nearly 300 languages. Explore trending topics, save articles for offline reading, and customize your reading experience with various themes and text sizes. Contribute to the community by editing articles and participating in discussions.

What We Love

  • 🚀 Vast information repository
  • 👍 Customizable reading experience
  • 🚀 Convenient offline access
  • 👍 Reliable and trustworthy content

Room to Improve

  • 🐛 Occasional crashes and freezes
  • 🔋 High data usage and battery drain
  • 🔒 Concerns about political bias and censorship
Wikipanion#2

Wikipanion by Robert Chin

Strong Contender
🔍 Reference
3.8😊(155 ratings)
Free
Wikipanion screenshot 1
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This app provides a streamlined and efficient way to access and navigate Wikipedia content. It offers advanced search capabilities, bookmarking of specific sections, and a history feature grouped by visit date. Enjoy features like a table of contents browser, dual language support, and image saving.

What We Love

  • 🚀 Fast and responsive
  • 👍 Simple and intuitive UI
  • 📚 Excellent Wikipedia integration
  • 🔍 Helpful search and navigation features

Room to Improve

  • 🐛 Occasional crashes and performance issues
  • 🕰️ Slow loading times for some users
  • 💡 Lack of dark mode or customization options
Catholic Encyclopedia Offline#3

Catholic Encyclopedia Offline by Martin Vcelak

Information in your pocket
Worth Considering
🔍 Reference
4.6(137 ratings)
$1.99
Catholic Encyclopedia Offline screenshot 1
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Access the complete 1914 Catholic Encyclopedia offline on your iPhone or iPad. Explore over 11,500 articles and images with an intuitive interface, powerful search, and easy sharing options. A comprehensive resource for Catholic history, teaching, and information.

More Encyclopedia Offline apps to explore

4
Omnipedia—Offline Encyclopedia
Omnipedia—Offline Encyclopedia
Omnipedia—Offline Encyclopedia
Offline browser for Wikipedia
Free

Access a vast offline encyclopedia, even without internet. This app provides fast, private access to millions of articles, with monthly updates and personalized recommendations. Enjoy a clean interface, customizable appearance, and on-device AI for quick answers.

Offline Wikipedia accessLightning-fast searchOn-device AI for answers
🔍 Reference
(1)
free with in-app purchases
5
Encyclopedia of Guns
Encyclopedia of Guns
Encyclopedia of Guns
by Good Spider, LLC
Free

Explore a vast collection of articles and HD photos detailing thousands of firearms, from historical to modern. This educational tool is suitable for all ages, offering comprehensive information and an engaging user experience. Read offline and collect badges for your learning progress.

Thousands of articles and HD photosComprehensive gun informationUser-friendly interface
📚 Education
(23)
free with in-app purchases
6
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Thesaurus & Offline Vocabulary
Free

Access a vast collection of dictionaries and thesauruses with definitions, pronunciations, and etymology. Features include offline access, advanced search options, and personalized word lists. Ideal for students, professionals, and word enthusiasts.

15 Oxford DictionariesThesaurus integrationAudio pronunciations
🔍 Reference
(28K)
free with in-app purchases
7
Kiwix
Kiwix
Kiwix
by Wikimedia CH
Free

Access a vast library of educational content offline. Download encyclopedias, wikis, and more to browse anytime, anywhere without an internet connection. Save data and access reliable information even in remote areas.

Offline content accessAdvanced compression technologyVast educational content library
🔍 Reference
(410)
free
8
Encyclopedia by Farlex
Encyclopedia by Farlex
Encyclopedia by Farlex
Science, World History, & More
Free

Access over 330,000 articles, 77,000 audio pronunciations, and 24,000 images from trusted sources. This app provides in-depth information on a vast range of topics, perfect for students, professionals, or the curious.

330,000+ encyclopedia articles24,000+ images77,000+ audio pronunciations
🔍 Reference
(366)
free with in-app purchases
9
Wikipanion Plus
Wikipanion Plus
Wikipanion Plus
by Robert Chin
$4.99

This app enhances the Wikipedia browsing experience by allowing you to queue articles for later reading. Save entries for offline access or faster loading, with background downloading so you can continue browsing uninterrupted.

Queue mode for future readingSave entries for offline browsingBackground downloading of articles
🔍 Reference
(60)
paid
10
Offline: Files, Browser, VPN
Offline: Files, Browser, VPN
Offline: Files, Browser, VPN
Private Browsing & Save Videos
Free

Manage files, browse privately with a VPN, and play media offline. Features include camera search, ad-free browsing, and password protection for enhanced privacy and digital control.

Private browsing with VPNAd-free browsing experiencePassword protection for apps and folders
🔧 Utilities
(132K)
free with in-app purchases
11
WikiMed
WikiMed
WikiMed
The best medical encyclopedia!
Free

Access a vast collection of over 51,000 medical articles covering diseases, medications, anatomy, and sanitation. This comprehensive resource is ideal for healthcare professionals and students, offering offline access to vital health information.

51,000+ medical articlesCovers diseases, medications, anatomy, sanitationOffline access
🔍 Reference
(98)
free
12
World Map +
World Map +
World Map +
Quick Reference World Maps
Free

Access essential world maps for quick reference and navigation. Explore political, detailed, and time zone maps, with interesting facts about countries. Works online and offline, ideal for students, travelers, and curious minds.

Quick access to essential world mapsPolitical, Detailed, and Time Zones MapsEasy map switching
🔍 Reference
(7.1K)
ad-supported
13
Offline Reader !
Offline Reader !
Offline Reader !
by Vijay Anand
Free

Save web pages with formatting and images for offline reading on your iOS device. Access your saved content anywhere, even without an internet connection. Also supports offline playback of music and videos.

Save web pages for offline readingPreserves formatting and imagesBuilt-in browser for saving
📊 Productivity
(23)
free
14
Encyclopedia : 25,000+ topic
Encyclopedia : 25,000+ topic
Encyclopedia : 25,000+ topic
Read, Download HD Images
Free

Access a vast digital encyclopedia with over 25,000 topics and articles covering nature, cities, and more. Read content or have it read aloud, and explore over 100 high-definition images per article. Discover popular places in over 1000 cities worldwide.

25,000+ topics and articles10 diverse categoriesRead-aloud functionality
🔍 Reference
(57)
ad-supported
15
Catholic Encyclopedia
Catholic Encyclopedia
Catholic Encyclopedia
Knowledge in your pocket.
Free

Access a comprehensive Catholic Encyclopedia with over 16,000 articles optimized for mobile. Enjoy offline access, intuitive navigation, and powerful search capabilities to explore religious, historical, and geographical topics.

Offline access to 16,000+ articlesIntuitive user interfaceEnhanced search functionality
📚 Education
(47)
free with in-app purchases
16
Offline Pages
Offline Pages
Offline Pages
by Codium Labs LLC
$4.99

Save web pages with formatting, images, and links to view them offline. Access content without an internet connection, ideal for travel or areas with poor signal. Send links from other devices for easy offline access.

Save web pages with formatting and imagesView saved pages without internetSend links from other devices
✈️ Travel
(18)
free with in-app purchases
17
Encyclopedia of Animals
Encyclopedia of Animals
Encyclopedia of Animals
by Good Spider, LLC
Free

Discover a vast collection of animal information with high-definition photos and engaging articles. This educational tool is perfect for children learning about wildlife or anyone interested in expanding their animal knowledge. Enjoy offline access and earn badges for reading.

Extensive animal articles and HD photosAlphabetical organization (A-Z)User-friendly interface
📚 Education
(19)
free with in-app purchases
18
LINNÉ LENS - AI Encyclopedia
LINNÉ LENS - AI Encyclopedia
LINNÉ LENS - AI Encyclopedia
Scannable AI Encyclopedia
Free

Instantly identify over 10,000 living organisms by scanning them with your phone's camera. Build your personal encyclopedia with photos and detailed commentary, even offline. Discover connections and become an expert on the natural world.

Instant organism identification via scanningCatalog over 10,000 speciesCreate personalized encyclopedias
🔍 Reference
(22)
free with in-app purchases
19
Merriam-Webster Dictionary
Merriam-Webster Dictionary
Merriam-Webster Dictionary
by Merriam-Webster, Inc.
Free

Access America's most respected dictionary, updated with new words and meanings. This app offers offline access, voice search, daily vocabulary challenges, and a thesaurus. It's designed for English language reference, education, and vocabulary enhancement.

Offline dictionary accessVoice search for wordsDaily Word of the Day
🔍 Reference
(320K)
free with in-app purchases
20
English Dictionary - Offline
English Dictionary - Offline
English Dictionary - Offline
Offline English Dictionary
Free

A comprehensive offline English dictionary offering in-depth word definitions, usage examples, and rich language data. Explore synonyms, antonyms, pronunciations, and more without an internet connection.

Offline accessDetailed word definitionsUsage examples
🔍 Reference
(5)
free with in-app purchases