# PDF Margin Adjuster vs MarginNote 4

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.

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.

## The numbers

| Metric | PDF Margin Adjuster | MarginNote 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (45 ratings)](https://appshunter.io/ios/app/pdf-margin-adjuster/id1450718650/reviews)** | [4.5 (716 ratings)](https://appshunter.io/ios/app/marginnote-4-ai-notesmindmap/id1531657269/reviews) |
| Number of ratings | 45 | **716** |
| Positive reviews | **83.3% of reviews** | 58.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 330 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Yohei Iseki](https://appshunter.io/developer/1450718649) | [Beijing Yunsi Software Technology Co., Ltd](https://appshunter.io/developer/723205556) |

## What reviewers say

### PDF Margin Adjuster

[App page](https://appshunter.io/ios/app/pdf-margin-adjuster/id1450718650)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### MarginNote 4

[App page](https://appshunter.io/ios/app/marginnote-4-ai-notesmindmap/id1531657269)

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.

**Highlights:** 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

**Features:** Family Sharing, Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription to MAX (Monthly) | $1.99 | per month |
| Subscription to MAX (3 months) | $4.99 | per 3 months |
| Subscription to MAX (6 months) | $7.99 | per 6 months |
| Subscription to MAX (Annually) | $12.99 | per year |
| MarginNote Max Annual | $16.99 | per year |
| 14 days Free Trial | Free | one-time |
| Upgrade to PRO from MN3(iOS) | $4.99 | one-time |
| Unlock PRO Forever (New) | $12.99 | one-time |
| Upgrade to MAX from MN3(macOS) | $19.99 | one-time |
| Unlock MAX based on PRO | $39.99 | one-time |
| Unlock MAX based on PRO (New) | $40.00 | one-time |
| Unlock MAX Forever (New) | $51.99 | one-time |

**What reviewers like**

- 🚀 Powerful features
- 📚 Great for academic/research use
- 👍 Useful note-taking and organization
- 🖊️ Improved handwriting and annotation

**What reviewers complain about**

- 🐛 Buggy and crashes frequently
- 🕰️ Slow and laggy sync between devices
- 🤯 Steep learning curve, poor documentation
- 💰 Expensive upgrade from previous version

**Reported bugs**

- Disappearing annotations when using extend function
- Inability to restore accidentally deleted mind maps
- Inconsistent behavior with PDF file management

**Requested features**

- Improved iCloud/cloud sync reliability
- More intuitive and user-friendly interface
- Better support for external document libraries
- Ability to disable auto-excerpt selection


## Frequently asked questions

### Is PDF Margin Adjuster free?

PDF Margin Adjuster is free to download, with no in-app purchases.

### Is MarginNote 4 free?

MarginNote 4 is free to download, with in-app purchases available.

### Which has better reviews, PDF Margin Adjuster or MarginNote 4?

PDF Margin Adjuster is rated higher. PDF Margin Adjuster averages 4.6 out of 5 from 45 ratings, while MarginNote 4 averages 4.5 from 716 ratings.

### Do PDF Margin Adjuster or MarginNote 4 have ads?

Neither PDF Margin Adjuster nor MarginNote 4 shows ads.

### Which is updated more often, PDF Margin Adjuster or MarginNote 4?

PDF Margin Adjuster ships an update every 3 months, and MarginNote 4 every 3 weeks. Most recently, PDF Margin Adjuster was updated on July 14, 2026 and MarginNote 4 on September 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*