MarginNote 4: AI Notes·MindMap

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.

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