MarginNote 4: AI Notes·MindMap 4+
PDF>Mind Maps>Flashcards + OCR
Beijing Yunsi Software Technology Co., Ltd
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- Free
- Offers In-App Purchases
Screenshots
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
What’s New
Version 4.2.1
Extract & Recognize Instantly! AI OCR Is Here
Max users unlock advanced features. AI OCR handles tedious typing and formatting for you.
- Wide Recognition Support: Accurately recognize formulas, tables, handwriting, images, text boxes, vertical text, and multiple languages.
- Direct Use After Recognition: Recognized content like Markdown formulas and tables flows directly into excerpts, mind maps, and cards.
- Low Cost Shown in Real-Time: AI OCR cost is displayed live (typically just 0.01~0.1 points).
Extra Actions for Max Users: Use custom prompts to make AI organize, translate, summarize, or create flashcards.
- Edit, add, and manage prompts.
- 5 Ready-to-Use Preset Templates: Translate to English/Chinese, generate Mermaid flowcharts, create flashcards, or build tree-style mind maps.
- Deep Thinking Mode: Activate a more powerful model using keywords like "deep thinking" , “analyze deeply” or "深度思考".
Enable AI OCR: Document Top Toolbar → Double-tap Hand/Excerpt/Extend Tool settings → Enable `AI OCR` (Max users: also enable "Extra Actions").
Learn more: In-app `?` → `User Manual`.
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What's Improved & New
- Better AI Models: All four core models (Balanced, Light, Deep, Task) updated for faster responses and improved comprehension. Default "Light" model is quicker and more efficient, reducing points cost.
- New `Full Tools` Prompt Module: One-click access to all tools with interactive confirmation.
- New `fetch_url` Tool: Enables web search and content fetching.
- Custom Prompt Model Selection: Assign specific models to prompts, overriding the default.
- Custom Template Sync & Export: Supports iCloud sync and export.
- Improved Assistive Excerpt: Adjusted button to prevent accidental Ask window triggers.
- Better TOC Display: Line breaks supported for long text.
- More Accurate AI TOC Mind Map Positioning: Excerpt cards insert more precisely when using "Groupted (By Table of Contents)".
- Enhanced Explain Mode: Refined prompts and responses.
- Streamlined Multi-Card Dialogue: Consistent interface when multiple cards are selected.
- Default AI Sidebar in Document Mode: Opens in sidebar for convenience.
- Expandable Ask Window: Collapsed Ask window can be expanded.
- Improved Markdown & Mermaid Display.
- New Floating Right Panel: Displays Cards, Review, AI Chat, and Research as draggable windows (Study Set "..." → "Floating Right Panel").
Fixes
- Handwriting-to-text, eraser mode, and editor misalignment fixes.
- Tool call feedback button fixed.
- AI TOC mind map structure issues resolved.
- Lag from collapsing content fixed.
- Card drift after "Add Response to Mind Map" fixed.
- Mermaid rendering errors fixed.
- Mac window shortcut focus issue fixed.
- iPad `.mmap` import fix.
- EPUB `get_page_content` crash fixed.
- Other minor optimizations and bug fixes.
Feedback Welcome
- International Community: https://forum.marginnote.com
- Support Email: service@marginnote.com
App Privacy
The developer, Beijing Yunsi Software Technology Co., Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Privacy practices may vary based on, for example, the features you use or your age. Learn More
Information
- Seller
- Beijing Yunsi Software Technology Co., Ltd
- Size
- 428.1 MB
- Category
- Productivity
- Compatibility
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- iPhone
- Requires iOS 15.0 or later.
- iPad
- Requires iPadOS 15.0 or later.
- iPod touch
- Requires iOS 15.0 or later.
- Mac
- Requires macOS 12.0 or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Languages
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English, Japanese, Simplified Chinese, Traditional Chinese
- Age Rating
- Learn More
- Copyright
- Copyright © 2023 Beijing YunSi Software Technology Co., Ltd. All rights reserved.
- Price
- Free
- In-App Purchases
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- AI Credit Pack 20000 USD 44.99
- AI Credit Pack 3000 USD 7.49
- AI Credit Pack 500 USD 1.39
- Unlock MAX based on PRO (New) USD 38.00
- Unlock MAX Forever (New) USD 49.99
- Unlock PRO Forever (New) USD 12.99
- Unlock MAX based on PRO USD 39.99
- 14 days Free Trial USD 0.00
- Subscription to MAX (3 months) USD 4.99
- Subscription to MAX (6 months) USD 7.99
Supports
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Family Sharing
Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.