# PDF Viewer by Nutrient vs 成语故事讲读大全

The clearest difference is review sentiment: PDF Viewer by Nutrient at 73% against 成语故事讲读大全's 0%. PDF Viewer by Nutrient also leads on price (Free vs $1.99) and update cadence (monthly vs every 22 months). 成语故事讲读大全's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 17.0). On ads and device support there is nothing between them.

PDF Viewer by Nutrient is free to download; 成语故事讲读大全 costs $1.99 up front. PDF Viewer by Nutrient sells 2 in-app purchases, starting at $6.99 per 3 months. 成语故事讲读大全 asks for nothing beyond the download.

PDF Viewer by Nutrient ships an update monthly, 成语故事讲读大全 every 22 months. The most recent releases landed on October 28, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | PDF Viewer by Nutrient | 成语故事讲读大全 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.6 (9.1K ratings)](https://appshunter.io/ios/app/pdf-viewer-by-nutrient/id1120099014/reviews)** | — |
| Number of ratings | **9.1K** | — |
| Positive reviews | **73.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 22 months |
| Monetization | Freemium | — |
| Size | 109 MB | 171 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PSPDFKit GmbH](https://appshunter.io/developer/966931428) | [强 马](https://appshunter.io/developer/687218962) |

## What reviewers say

### PDF Viewer by Nutrient

[App page](https://appshunter.io/ios/app/pdf-viewer-by-nutrient/id1120099014)

Easily view, search, and annotate PDF documents on your iPhone and iPad. Import files from cloud services, fill out forms, add signatures, and organize your documents. Advanced features like redaction and combining documents are available with a Pro subscription.

**Highlights:** View and search PDFs, Annotate with highlights and notes, Sign documents digitally, Fill out PDF forms, Organize and share documents, Import from cloud services

**Features:** Family Sharing, iMessage stickers

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Viewer Pro 3 Months | $6.99 | per 3 months |
| PDF Viewer Pro Yearly | $19.99 | per year |

**What reviewers like**

- 🚀 Seamless integration with iCloud and Files app
- 👍 Intuitive annotation tools with Apple Pencil
- 🎨 Versatile highlighting and drawing options
- 💾 Saves annotations to original PDF files
- 🔍 Powerful search and navigation features

**What reviewers complain about**

- 🐛 Occasional crashes and performance issues
- 🤔 Confusing UI and steep learning curve
- 🔀 Difficulty managing and organizing PDF files
- 🔍 Inconsistent text selection and highlighting
- 🔒 Privacy concerns around data collection

**Reported bugs**

- Annotations randomly disappearing or not saving
- Incompatibility issues with certain PDF files
- Scrolling and panning problems on large PDFs
- Unexpected crashes after iOS updates

**Requested features**

- Add a rubber/eraser tool for annotations
- Implement a side-by-side PDF view mode
- Improve palm rejection and gesture support
- Allow customization of toolbar and shortcuts
- Provide better options for PDF file management


### 成语故事讲读大全

[App page](https://appshunter.io/ios/app/id1579709148)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PDF Viewer by Nutrient free?

PDF Viewer by Nutrient is free to download, with in-app purchases available.

### Is 成语故事讲读大全 free?

成语故事讲读大全 costs $1.99, with no in-app purchases.

### Do PDF Viewer by Nutrient or 成语故事讲读大全 have ads?

Neither PDF Viewer by Nutrient nor 成语故事讲读大全 shows ads.

### Which is updated more often, PDF Viewer by Nutrient or 成语故事讲读大全?

PDF Viewer by Nutrient ships an update monthly, and 成语故事讲读大全 every 22 months. Most recently, PDF Viewer by Nutrient was updated on October 28, 2026 and 成语故事讲读大全 on October 2, 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.*