
MarginNote 4: AI Notes·MindMap
PDF>Mind Maps>Flashcards + OCR
Free · In-App Purchases
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
"AI Breakdown" Feature Now Available:
- Full-Book Breakdown: Initiate breakdown directly from the table of contents (under 100 pages for direct breakdown; over 100 pages, break down by chapter).
- Template Mode: Includes six major professional templates – Academic, Exam Prep (General/Math & Science/Medicine/Law), Exercise-Oriented Learning, Language Learning, Literature, and Self-Improvement – for structured AI breakdown tailored to different scenarios.
- Question-Driven Mode: A Q&A-focused approach for structured breakdowns targeting specific goals: Deep Understanding / Practical Application / Knowledge Organization / Teaching Preparation / Problem Solving.
- Custom Requirements & Quick Options: Input natural language to fine-tune breakdown goals; use quick options (e.g., "Add Mnemonic," "Grade by Difficulty") to generate professional prompts with one click, precisely controlling output granularity.
- Background Operation: Breakdown tasks run silently in the background, allowing uninterrupted work while processing long documents.
- Manual Model Switching for Breakdown (Max Feature): Switch models manually to suit different tasks.
User Benefits Upgrade (Effective Post-Update):
- Max User Monthly Quota: Increased to 500 points/month (auto-refreshes).
- New User Bonus Increased: Newly purchased users now receive 500 Permanent Points (existing users receive a 200-point supplement).
(Check your points balance: In-app `Settings` -> `AI Points`)
New Features & Optimizations:
AI Interaction & Core Capabilities:
- New Points Cost Indicator: Estimated points/credit consumption is clearly displayed when using AI TOC and the new AI Breakdown feature for greater transparency.
- Multimodal & Model Selection: Light and Balanced models now natively support **multimodal input**, significantly improving recognition accuracy for mixed text and image content.
- Automated Review Flow: The new add_to_review parameter for tool calls allows AI-generated cards to be **automatically added to the review queue**, closing the "Breakdown-Review" loop.
Core Experience Improvements:
- New Toggle Eraser Shortcut (Shift+E): Optimizes tool switching efficiency during handwritten note-taking for a smoother writing and editing experience.
- PDF Engine Optimization: Improved logic for restoring deleted PDF pages and support for resetting page order confusion caused by page operations.
- Other ongoing experience details and stability optimizations.
Learn more about AI features: In-app ? -> User Manual.
In-App Purchases
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
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Beijing Yunsi Software Technology Co., Ltd
- Size
- 547.7 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.0 or later.
- 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
English and 3 more
- English, Japanese, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- 14 days Free Trial NT$0.00
- Upgrade to PRO from MN3(iOS) NT$150.00
- Unlock PRO Forever (New) NT$390.00
- 14 days Free Trial NT$0.00
- Subscription to MAX (Annually) NT$390.00
- Unlock MAX based on PRO (New) NT$1,290.00
- Upgrade to MAX from MN3(macOS) NT$690.00
- Unlock MAX Forever (New) NT$1,790.00
- Subscription to MAX (3 months) NT$150.00
- Subscription to MAX (Monthly) NT$60.00
- Copyright
- Copyright © 2023 Beijing YunSi Software Technology Co., Ltd. All rights reserved.
