# Watch PDF Reader vs NanoPDF

The clearest difference is price: NanoPDF at Free against Watch PDF Reader's $4.99. Watch PDF Reader's advantage is iOS requirement (16.0 vs 18.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

NanoPDF is free to download; Watch PDF Reader costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Watch PDF Reader ships an update every 3 weeks, NanoPDF every 6 weeks. Both last shipped on October 7, 2026.

## The numbers

| Metric | Watch PDF Reader | NanoPDF |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.0 (17 ratings)](https://appshunter.io/ios/app/watch-pdf-reader/id1665291391/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 28.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 37 MB | 6 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Engels Cybersecurity & Consulting GmbH](https://appshunter.io/developer/1591355311) | [Giovanni Outerleys](https://appshunter.io/developer/1557846953) |

## What reviewers say

### Watch PDF Reader

[App page](https://appshunter.io/ios/app/watch-pdf-reader/id1665291391)

Access and view PDF documents directly on your Apple Watch. Convert photos and scans into PDFs on your iPhone, then transfer them for offline viewing and quick reference on the go. Zoom in to see every detail.

**Highlights:** View PDFs on Apple Watch, Convert photos to PDF, Scan documents to PDF, Import PDFs from Files app, Offline PDF viewing, Zoom functionality

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### NanoPDF

[App page](https://appshunter.io/ios/app/nanopdf/id6467386184)

**In-app purchases:** none


## Frequently asked questions

### Is Watch PDF Reader free?

Watch PDF Reader costs $4.99, with no in-app purchases.

### Is NanoPDF free?

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

### Do Watch PDF Reader or NanoPDF have ads?

Neither Watch PDF Reader nor NanoPDF shows ads.

### Which is updated more often, Watch PDF Reader or NanoPDF?

Watch PDF Reader ships an update every 3 weeks, and NanoPDF every 6 weeks. Most recently, Watch PDF Reader was updated on October 7, 2026 and NanoPDF on October 7, 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.*