PDF Margin Adjuster vs MarginNote 4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Margin Adjuster
Easily modify the margins of your PDF, PPT, and PPTX files. This app offers interactive tools to adjust margins precisely, from simple adjustments to advanced, side-specific controls. Save your modified documents directly to your device or cloud storage.
- Interactive margin adjustment
- Simple, advanced, and expert modes
- Adjust margins side-by-side
- Save to device or iCloud
- Share to other applications
- Supports PDF, PPT, PPTX files
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Have you experienced that a PDF file have too large/small margin? PDF Margin Adjuster allows you to adjust PDF margins interactively. How to Use === 1. Open a PDF/PPT/PPTX* file with the folder button on the lower left of the screen. You also can open a PDF/PPT/PPTX* file from another application (e.g. Safari). 2. Adjust the margin of the file. - Simple: adjust margin with the arrow buttons at the center of the screen. - Advanced: adjust margin either side separately. - Expert: adjust margin more finely and freely. 3. Save it to your own device or iCloud/ Share it to another application with the share button at the bottom of the screen. *PPT/PPTX is experimental feature, layout can be collapsed.
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
Screenshots
Verdict
The clearest difference is in-app purchases: PDF Margin Adjuster at none against MarginNote 4's 13. PDF Margin Adjuster also leads on review sentiment (83% vs 59%) and iOS requirement (13.0 vs 17.0). MarginNote 4's advantage is update cadence (every 3 weeks vs every 3 months) and ratings volume (716 vs 45). On price, rating, 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
Both are free to download. MarginNote 4 sells 12 in-app purchases, starting at $1.99 per month. PDF Margin Adjuster asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for PDF Margin Adjuster against 4.5 for MarginNote 4. That said, the two scores are not equally well evidenced: MarginNote 4 has 716 ratings behind it against 45, so its average is the more settled of the two. Written reviews are what separate them: 83% of PDF Margin Adjuster's written reviews are positive against 59% of MarginNote 4's.
PDF Margin Adjuster ships an update every 3 months, MarginNote 4 every 3 weeks. The most recent releases landed on July 14, 2026 and September 25, 2026 respectively.
| Parameter | PDF Margin Adjuster | MarginNote 4 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (45 ratings) — better | 4.5 (716 ratings) |
| Positive reviews | 83.3% of reviews — better | 58.8% of reviews |
| Number of ratings | 45 | 716 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 330 MB |
| Age rating | 4+ | 4+ |
| Developer | Yohei Iseki | Beijing Yunsi Software Technology Co., Ltd |
Customer experience
PDF Margin Adjuster
MarginNote 4
Bugs and requests
PDF Margin Adjuster
Not enough reviews yet to summarise bugs or 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
In-app purchases
PDF Margin Adjuster
No 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
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- 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









