MarginNote 4: AI Notes·MindMap
MarginNote 4: AI Notes·MindMap Summary
MarginNote 4: AI Notes·MindMap is a with in-app purchases iOS app in Productivity by Beijing Yunsi Software Technology Co., Ltd. Released in May 2024 (2 years ago). It has 943 ratings with a 4.48★ (good) average. Based on AppGoblin estimates, it reaches roughly 2.4K monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated May 15, 2026, version 3.
Recent activity: 3.00 new ratings this week View trends →
Data tracking: SDKs and third-party integrations were last analyzed on May 1, 2026.
Store info: Last updated on App Store on May 15, 2026 (version 3).
MarginNote 4: AI Notes·MindMap was last scanned for SDKs 2026-05-01. Below is the overview of third party companies detected in the app. The full list of raw SDKs, app permissions and unknown SDKs is available here.
Mixpanel
Firebase
nanopb
Swinject
Google
Alamofire
Facebook
Snap4.48★
Ratings: 943
Screenshots
App Description
MarginNote is the PDF study tool for deep readers. One excerpt is a PDF highlight, a mind map node, and a flashcard — one capture, three places. This is the Card Axis architecture, so you stop ferrying content between a PDF reader, a notes app, and a flashcard tool. A decade of iteration. 188K+ App Store ratings.
【Four Featured Mechanics】
▸ Card Axis — One excerpt, three renders. Document highlight, mind map node, and flashcard are the same card seen from three angles.
▸ Title Link — Old notes auto-surface in new documents. When a familiar concept appears in what you're reading, your past annotation lights up on the page.
▸ Extended Note — Long-press anywhere on a PDF to open writing space. No anchored text required; three display modes (inline / margin / collapsed).
▸ Immersive Mode (4.4) — Three-state toggle: Read / Write / Recall. UI folds away. Recall blurs excerpts with Gaussian blur — tap to reveal only after you've actually recalled.
【AI Capabilities (introduced in 4.2)】
AI book breakdown · AI OCR templates · AI translation · AI Q&A · AI flashcard generation
Our stance is AI as assistant, not replacement — every suggestion can be saved as your own thinking node, never thinking for you.
【Apple Intelligence (iOS 26+)】
Recall Mode hints can run on-device via Apple Intelligence — pick "Apple AI" or "cloud LLM" in Settings. With Apple AI selected, three tiers of help — Neighbor Coordinate · Reasoning Prompt · Key Distinction — are generated by Apple Foundation Models right on your device: no network calls, no AI credits used, your notes never leave your device. Even if you've selected cloud LLM, going offline auto-falls back to Apple Intelligence (provided your device supports it) — so libraries, planes, and exam-day silent rooms never break your hint loop.
【Full Workflow】
Fast OCR · Study Sets (PDF / EPUB / video / audio) · direct read from Zotero / cloud drives / USB · 10 mind map styles · book recomposition · dual-document compare · concept maps · handwriting layers
【FSRS Spaced Repetition】
Built on the open-spaced-repetition project's algorithm (paper accepted by ACM SIGKDD; Anki has used FSRS as its default scheduler since v23.10). Push short-term memory into long-term.
【Built For】
Anyone re-reading a single document until it sticks — med school (USMLE / MCAT) · law scho