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MarginNote 4: AI Notes·MindMap

Transform complex PDFs and textbooks into visual mind maps, structured outlines, and smart flashcards. The ultimate all-in-one workspace for students, researchers, and power users to master any subject.

Education & Learning ›Productivity & Self-Improvement ›

Key Figures

Downloads

334K+

User Rating

4.6/5

Total Ratings

17K+

Publisher

Beijing Yunsi Software Technology Co., Ltd

The Ultimate Toolkit for High-Stakes Learning

Bridge the gap between reading and understanding. MarginNote 4 integrates your documents, mind maps, and flashcards into one powerful AI-driven workspace designed for academic and professional mastery.

Visual Knowledge Synthesis

Transform fragmented highlights into dynamic mind maps. Visualize complex connections across hundreds of PDFs to build your 'Second Brain' effortlessly.

Smart AI Research Extraction

Accelerate your literature review. Instantly extract formulas, charts, and key insights from academic papers with high-speed OCR and intelligent content detection.

FAQ

Frequently Asked Questions

Everything you need to know about MarginNote 4: AI Notes·MindMap

What is MarginNote 4?

MarginNote 4 is a study application combining reading, note-taking, mind mapping, and spaced-repetition flashcards in a single workspace. It supports a comprehensive study workflow from preview to review.

Does MarginNote 4 offer mind mapping functionality?

Yes, MarginNote 4 features extensive mind mapping capabilities, allowing users to build idea trees, choose from 10 branch styles, and auto-generate mind maps from card properties.

Can I use flashcards for spaced repetition in MarginNote 4?

Yes, MarginNote 4 includes an in-place Flashcard Editor and utilizes the FSRS spaced-repetition algorithm. This schedules optimal review times for long-term memory retention.

What are the membership options for MarginNote 4?

MarginNote 4 offers Basic (free), Pro (one-time purchase for iPad features), and Max (one-time purchase or semester upgrade for all Apple devices with advanced academic tools). All plans include a 14-day free trial.

Does MarginNote 4 support Optical Character Recognition (OCR)?

Yes, MarginNote 4 features a fast OCR engine for clean PDF annotation. The Pro plan includes on-device OCR, and the app supports digitized Cloze for scanned books.

Can MarginNote 4 sync across multiple Apple devices?

Yes, MarginNote 4 supports iCloud sync across iPhone, iPad, and Mac devices. The Max membership tier provides Pro features accessible on every Apple device.

How does MarginNote 4 assist with critical thinking?

MarginNote 4 enhances critical thinking with features like Quick Extend Note, which adds writing space beside paragraphs. It also has Handwriting Layers to refresh books for new study sessions.

Does MarginNote 4 allow combining different study materials?

Yes, MarginNote 4 allows users to combine various study materials using the Study Set feature. This keeps PDFs, EPUBs, videos, and audio together in one project.

Can I annotate PDFs using MarginNote 4?

Yes, users can annotate PDFs in MarginNote 4, even with the free Basic membership, by highlighting and using Quick Extend Note. The app also features a fast OCR engine for clean PDF annotations.

Does MarginNote 4 integrate with external libraries like Zotero?

Yes, MarginNote 4 integrates with other libraries via External Library Access. Users can open files from Zotero, USB drives, and more directly, without copying them.

The following screenshots and description are sourced directly from the app's official store listing and are the property of the app developer.

App Store

Screenshots

MarginNote 4: AI Notes·MindMap - MarginNote 4 app interface showing study cards being created from a math textbook and a video lecture — MarginNote 4 app interface showing study cards being created from a math textbook and a video lecture

MarginNote 4: AI Notes·MindMap - MarginNote 4 mind map interface showing connected academic knowledge cards. — MarginNote 4 mind map interface showing connected academic knowledge cards.

MarginNote 4: AI Notes·MindMap - MarginNote 4 app interface showing the Quick Extend Note feature with handwritten annotations in a math document — MarginNote 4 app interface showing the Quick Extend Note feature with handwritten annotations in a math document

MarginNote 4: AI Notes·MindMap - A medical illustration of the circulatory system organized within a visual mind map in the MarginNote 4 app interface — A medical illustration of the circulatory system organized within a visual mind map in the MarginNote 4 app interface

MarginNote 4: AI Notes·MindMap - MarginNote 4 handwriting layers for academic study and annotations — MarginNote 4 handwriting layers for academic study and annotations

MarginNote 4: AI Notes·MindMap - MarginNote 4 interface showing OCR and digitized cloze features for active recall from scanned books. — MarginNote 4 interface showing OCR and digitized cloze features for active recall from scanned books.

MarginNote 4: AI Notes·MindMap - MarginNote 4 interface showing Zettelkasten card board with tags for visual research — MarginNote 4 interface showing Zettelkasten card board with tags for visual research

MarginNote 4: AI Notes·MindMap - MarginNote 4 flashcards showing a heart anatomy diagram and spaced repetition review buttons. — MarginNote 4 flashcards showing a heart anatomy diagram and spaced repetition review buttons.

MarginNote 4: AI Notes·MindMap - MarginNote 4 professional features including AI-assisted auto excerpting and academic research tools — MarginNote 4 professional features including AI-assisted auto excerpting and academic research tools

Description

MarginNote 4 – Note-taking, Mind Map & Flashcards in One Study App MarginNote 4 combines reading, note taking, mind mapping, and spaced-repetition flashcards in a single workspace. Preview, attend class, consolidate, practice, review, and remember with proven study methods. KEY FEATURES CRITICAL THINKING * Quick Extend Note: add extra writing space beside any paragraph for insights or questions * Handwriting Layers: show or hide ink to refresh a book for a new round of study ACTIVE LEARNING * Study Set: keep PDFs, EPUBs, videos, and audio in one project and see how they connect * Book Compile: rearrange pages, merge chapters, or insert explanations from other books * Dual-Article View: compare two related documents side by side * Distraction-Free Mode * Fast OCR engine for clean PDF annotation * External Library Access: open files from Zotero, USB drives, and more without copying * Lightning-fast full-text search across notes and files VISUAL LEARNING * Mind Map: build a tree of ideas; choose from 10 branch styles * Concept Diagram: link cards with lines or gestures on an infinite canvas * Outliner: edit and reorder text nodes in bulk * Card Board: sort cards by color or tag in a Zettelkasten-style wall SMART NOTE TAKING * Custom Toolbar: colors, labels, and cloze highlights turn annotation into knowledge coding * AI Content Detection: one-tap extraction of formulas and charts from academic papers * Auto Mind Map creation from up to 10 card properties KNOWLEDGE BRIDGE * Split-view combos and in-app web search keep context at hand * Keyword links automatically surface related notes * Backlinks record page, map position, and timestamp for every card LONG-TERM MEMORY * In-place Flashcard Editor: create front/back cards the moment you excerpt * FSRS spaced-repetition algorithm schedules perfect review times SHARE & COLLABORATE * iCloud sync on iPhone, iPad, and Mac * URL scheme jumps back to any moment in your study * Multi-window and external-monitor support with drag & drop * Presentation Mode records visible actions for live demos * End-to-end encrypted sharing protects your study sets MEMBERSHIP TIERS Basic – Free Read, highlight, and use Quick Extend Note. Browse shared study sets at no cost. Pro – One-Time Purchase Unlock the full iPad experience with Apple Pencil shortcuts, on-device OCR, AI extraction, and multi-window power. Max – One-Time Purchase or Semester Upgrade Get Pro features on every Apple device, plus advanced academic tools on Mac and future platforms. All plans include a 14-day free trial. Cancel anytime in your iTunes settings. Questions? Email service@marginnote.com Terms of Use: https://dist.marginnote.cn/MarginNote_Terms_and_Conditions.pdf Privacy Policy: https://dist.marginnote.cn/MarginNote_Privacy_Policy.pdf