# PDF Viewer by Nutrient vs BLK2GO Live

The clearest difference is rating: PDF Viewer by Nutrient at 4.6 against BLK2GO Live's 4.0. PDF Viewer by Nutrient also leads on ratings volume (9.1K vs 4) and update cadence (monthly vs every 5 months). BLK2GO Live's advantage is in-app purchases (none vs 2) and review sentiment (100% vs 74%). On price and ads there is nothing between them.

Both are free to download. PDF Viewer by Nutrient sells 2 in-app purchases, starting at $6.99 per 3 months. BLK2GO Live asks for nothing beyond the download.

PDF Viewer by Nutrient holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: PDF Viewer by Nutrient has 9.1K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 74% of PDF Viewer by Nutrient's written reviews are positive against 100% of BLK2GO Live's, so the app with the better star average is not the one people write more warmly about.

PDF Viewer by Nutrient ships an update monthly, BLK2GO Live every 5 months. The most recent releases landed on October 13, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | PDF Viewer by Nutrient | BLK2GO Live |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (9.1K ratings)](https://appshunter.io/ios/app/pdf-viewer-by-nutrient/id1120099014/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/blk2go-live/id1453130813/reviews) |
| Number of ratings | **9.1K** | 4 |
| Positive reviews | 73.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Freemium | **Free** |
| Size | 112 MB | 225 MB |
| Requires iOS | 17.0 | **12.1** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PSPDFKit GmbH](https://appshunter.io/developer/966931428) | [Leica Geosystems AG](https://appshunter.io/developer/532477810) |

## 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


### BLK2GO Live

[App page](https://appshunter.io/ios/app/blk2go-live/id1453130813)

Visualize 2D and 3D scans in real-time with high-resolution images. Monitor device status like battery and storage. Manage and view existing scans directly from your mobile device.

**Highlights:** Live 2D and 3D scanning visualization, High-resolution image capture, Device status monitoring (battery, storage), Image visualization of existing scans, Scan management

**Features:** 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 BLK2GO Live free?

BLK2GO Live is free to download, with no in-app purchases.

### Which has better reviews, PDF Viewer by Nutrient or BLK2GO Live?

PDF Viewer by Nutrient is rated higher. PDF Viewer by Nutrient averages 4.6 out of 5 from 9.1K ratings, while BLK2GO Live averages 4.0 from 4 ratings.

### Do PDF Viewer by Nutrient or BLK2GO Live have ads?

Neither PDF Viewer by Nutrient nor BLK2GO Live shows ads.

### Which is updated more often, PDF Viewer by Nutrient or BLK2GO Live?

PDF Viewer by Nutrient ships an update monthly, and BLK2GO Live every 5 months. Most recently, PDF Viewer by Nutrient was updated on October 13, 2026 and BLK2GO Live on September 30, 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.*