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Best Essential 8 Knowledge Base Apps

249+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated October 2026

Out of 249+ essential 8 knowledge base apps on iOS, 20 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 Essential 8 Knowledge Base Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Essential 8 Knowledge BaseEssential 8 Knowledge BaseFree—NoNoAug 2026
2Knowledge from OnlineObjectsKnowledge from OnlineObjectsFree5.0★ (2)NoNoMay 2026
3Obsidian - Connected NotesObsidian - Connected NotesFree4.5★ (2.8K)NoNoOct 2026
4Feed Your Elephant KnowledgeFeed Your Elephant KnowledgeFree—NoNoAug 2026
5C8 HealthC8 HealthFree5.0★ (2)NoNoOct 2026
6SliteSliteFree3.9★ (34)NoNoOct 2026
7Schema — Knowledge CompoundingSchema — Knowledge CompoundingFree5.0★ (3)NoYesOct 2026
8Vera Health: AI for CliniciansVera Health: AI for CliniciansFree4.9★ (2.1K)NoNoOct 2026

Top Picks for Essential 8 Knowledge Base

Knowledge from OnlineObjects#2

Knowledge from OnlineObjects by Jonas Munk

Personal knowledge base
Strong Contender
📊 Productivity
5.0(2 ratings)
Free
Knowledge from OnlineObjects screenshot 1
Knowledge from OnlineObjects screenshot 2
Knowledge from OnlineObjects screenshot 3
Knowledge from OnlineObjects screenshot 4
Knowledge from OnlineObjects screenshot 5
Knowledge from OnlineObjects screenshot 6

Organize your thoughts and information with a personal knowledge base. Save web pages, highlight text, and sync across devices. Create questions and link answers to build a comprehensive understanding of any topic.

Obsidian - Connected Notes#3

Obsidian - Connected Notes by Dynalist Inc.

Your second brain on the go
Worth Considering
📊 Productivity
4.5😊(2.8K ratings)
Free
Obsidian - Connected Notes screenshot 1
Obsidian - Connected Notes screenshot 2
Obsidian - Connected Notes screenshot 3
Obsidian - Connected Notes screenshot 4
Obsidian - Connected Notes screenshot 5
Obsidian - Connected Notes screenshot 6

Organize your thoughts and ideas with a powerful knowledge base that utilizes local Markdown files. This app acts as your personal second brain, accessible on your mobile device for seamless note-taking and idea connection.

What We Love

  • 🚀 Powerful features
  • 👍 Customizable and flexible
  • 🔒 Secure and private
  • 💡 Innovative note-taking approach
  • 🚀 Smooth mobile experience
  • 👍 Excellent desktop and mobile integration
  • 👍 Vibrant community and plugin ecosystem

Room to Improve

  • 🐛 Sync issues and unreliable iCloud integration
  • 🔋 Slow startup and performance issues on mobile
  • 👎 Steep learning curve for new users
  • 👎 Limited sorting and organization options
  • 👎 Lack of WYSIWYG editing on mobile

More Essential 8 Knowledge Base apps to explore

FAQ about Essential 8 Knowledge Base

Are there free essential 8 knowledge base apps for iPhone?
Yes — 20 of the top essential 8 knowledge base apps we rank are free to download, including Essential 8 Knowledge Base and Knowledge from OnlineObjects.
Essential 8 Knowledge Base has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 249+ essential 8 knowledge base apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.