MarginNote 4 vs MOJi翻译
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MarginNote 4
This app integrates reading, note-taking, mind mapping, and flashcards into a unified study environment. It supports active learning with features like study sets, book compilation, and dual-article views. Enhance your understanding with visual learning tools and AI-powered content extraction for long-term memory retention.
- Integrated reading, note-taking, mind mapping, and flashcards
- Quick Extend Note and Handwriting Layers for annotation
- Study Set for organizing PDFs, EPUBs, videos, and audio
- Mind Map and Concept Diagram for visual learning
- AI Content Detection for formula and chart extraction
- FSRS spaced-repetition algorithm for reviews
- iCloud sync across Apple devices
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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 school (LSAT / bar exam) · grad prep (GRE / GMAT / CFA) · researchers · language learners (IELTS / TOEFL) · serious readers. 【All Apple Platforms】 iPhone + iPad + Mac under one Apple ID. iCloud syncs Study Sets, notes, and review progress. Native Apple Pencil support on iPad. — Questions? Email service@marginnote.com Terms: https://dist.marginnote.com/MarginNote_Terms_and_Conditions.pdf Privacy: https://dist.marginnote.com/MarginNote_Privacy_Policy.pdf
MOJi翻译
This app offers comprehensive Japanese translation tools for learning, work, and travel. It features text, camera, screen, and handwriting recognition for quick and accurate translations, along with detailed译文解析 to aid understanding.
- Text translation
- Camera word translation
- Screen translation
- Handwriting recognition
- Translation analysis
- Japanese pronunciation and vocabulary
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MOJi团队面向日语翻译场景精心设计! 满足学习翻译、工作翻译、出国翻译、旅游翻译等各种场景需求。 专注翻译,简洁免费 「文本翻译」:快速翻译,确保第一个结果就是想要的 「查词翻译」:对准单词,摄像头识别翻译 「屏幕翻译」:识别整个屏幕上的文本,快速翻译 「手写翻译」:简单画几笔,就可精准识别汉字假名 「译文解析」:支持日文注音、重点词汇等翻译整合功能,帮助用户快速理解文本 关于我们 『交流をより自然に』 - MOJi以此为宗旨,结合百万日语学习用户需求,已打造MOJi阅读、MOJiTest、MOJi会话等日语全方位学习产品。 MOJi将深刻围绕「体验」进行持续改进,これからも、よろしくお願いしますー 联系我们 - 通过APP>我的>设置>关注我们 - 邮箱:mojisho.support@mail.shareintelli.com 了解更多 - 微信公众号:MOJi辞書(←客服找这里) - 小红书:MOJi辞書 - 微博:MOJI_SERIES - X:MOJI_SERIES 我们的政策与协议: 隐私政策:https://www.mojitekku.com/mojiyaku/privacy-policy 用户协议:https://www.mojitekku.com/mojiyaku/terms-of-use
Screenshots
Verdict
The clearest difference is price: MarginNote 4 at Free against MOJi翻译's $0.99. MarginNote 4 also leads on ratings volume (716 vs 2). MOJi翻译's advantage is rating (5.0 vs 4.5) and in-app purchases (none vs 13). On ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
MarginNote 4 is free to download; MOJi翻译 costs $0.99 up front. MarginNote 4 sells 12 in-app purchases, starting at $1.99 per month. MOJi翻译 asks for nothing beyond the download.
MOJi翻译 holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: MarginNote 4 has 716 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 58% of MarginNote 4's written reviews are positive against 75% of MOJi翻译's.
MarginNote 4 ships an update every 3 weeks, MOJi翻译 every 5 days. Both last shipped on October 15, 2026.
| Parameter | MarginNote 4 | MOJi翻译 |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.5 (716 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 58.5% of reviews | 75.0% of reviews — better |
| Number of ratings | 716 — better | 2 |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.5 — better |
| Further details — not scored | ||
| Size | 330 MB | 115 MB |
| Age rating | 4+ | 4+ |
| Developer | Beijing Yunsi Software Technology Co., Ltd | MOJiTekku Co.,Ltd. |
Customer experience
MarginNote 4
MOJi翻译
Bugs and requests
MarginNote 4
Reported bugs
3 issues- Disappearing annotations when using extend function
- Inability to restore accidentally deleted mind maps
- Inconsistent behavior with PDF file management
Requested features
4 requests- Improved iCloud/cloud sync reliability
- More intuitive and user-friendly interface
- Better support for external document libraries
- Ability to disable auto-excerpt selection
MOJi翻译
Not enough reviews yet to summarise bugs or requests.
In-app purchases
MarginNote 4
- Subscription to MAX (Monthly)7 Days trial$1.991 Month
- Subscription to MAX (3 months)7 Days trial$4.993 Months
- Subscription to MAX (6 months)7 Days trial$7.996 Months
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- Subscription to MAX (Annually)1 Month trial$12.991 Year
- MarginNote Max Annual1 Month trial$16.991 Year
- 14 days Free Trial2 variantsFree
- Upgrade to PRO from MN3(iOS)$4.99
- Unlock PRO Forever (New)$12.99
Show 4 moreShow fewer
- Upgrade to MAX from MN3(macOS)$19.99
- Unlock MAX based on PRO$39.99
- Unlock MAX based on PRO (New)$40.00
- Unlock MAX Forever (New)$51.99
MOJi翻译
No in-app purchases









