# PDF Viewer by Nutrient vs inspectX

The clearest difference is in-app purchases: inspectX at none against PDF Viewer by Nutrient's 2. inspectX also leads on review sentiment (100% vs 74%). PDF Viewer by Nutrient's advantage is ratings volume (9.1K vs 36) and device support (4 vs 2). On price, rating, update cadence 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. inspectX asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for PDF Viewer by Nutrient against 4.7 for inspectX. That said, the two scores are not equally well evidenced: PDF Viewer by Nutrient has 9.1K ratings behind it against 36, so its average is the more settled of the two. Written reviews are what separate them: 74% of PDF Viewer by Nutrient's written reviews are positive against 100% of inspectX's.

PDF Viewer by Nutrient ships an update monthly, inspectX fortnightly. The most recent releases landed on October 13, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | PDF Viewer by Nutrient | inspectX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (9.1K ratings)](https://appshunter.io/ios/app/pdf-viewer-by-nutrient/id1120099014/reviews) | **[4.7 (36 ratings)](https://appshunter.io/ios/app/inspectx/id1629952491/reviews)** |
| Number of ratings | **9.1K** | 36 |
| Positive reviews | 73.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Freemium | **Free** |
| Size | 112 MB | 61 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PSPDFKit GmbH](https://appshunter.io/developer/966931428) | [Bridge-Intelligence](https://appshunter.io/developer/1189593016) |

## 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


### inspectX

[App page](https://appshunter.io/ios/app/inspectx/id1629952491)

Streamline infrastructure inspections with this mobile tool. It enables seamless data collection and reporting, even offline, eliminating the need for separate cameras and manuals. Designed for efficiency and compliance, it reduces errors and saves significant time on each inspection.

**Highlights:** Offline inspection capability, SNBI standards support, GIS interface for site navigation, Speech-to-text documentation, Tablet camera integration for photos, Sketching and photo markup, Data validation and color-coding

**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 inspectX free?

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

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

inspectX is rated higher. PDF Viewer by Nutrient averages 4.6 out of 5 from 9.1K ratings, while inspectX averages 4.7 from 36 ratings.

### Do PDF Viewer by Nutrient or inspectX have ads?

Neither PDF Viewer by Nutrient nor inspectX shows ads.

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

PDF Viewer by Nutrient ships an update monthly, and inspectX fortnightly. Most recently, PDF Viewer by Nutrient was updated on October 13, 2026 and inspectX on September 24, 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.*