# PDF Watch Viewer vs EchoKey

The clearest difference is device support: PDF Watch Viewer at 3 against EchoKey's 1. PDF Watch Viewer also leads on iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. PDF Watch Viewer sells 1 one-off in-app purchase and EchoKey sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | PDF Watch Viewer | EchoKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (51 ratings)](https://appshunter.io/ios/app/pdf-watch-viewer/id1346356339/reviews)** | — |
| Number of ratings | **51** | — |
| Positive reviews | 13.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 5 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Stefano Russello](https://appshunter.io/developer/543198306) | [Robinson Chinnappan](https://appshunter.io/developer/1885905681) |

## What reviewers say

### PDF Watch Viewer

[App page](https://appshunter.io/ios/app/pdf-watch-viewer/id1346356339)

View PDF documents directly on your Apple Watch without needing your iPhone. Easily transfer files from your web browser, iCloud, email, or messaging apps to your wrist for convenient access.

**Highlights:** View PDFs on Apple Watch, Transfer files from iPhone, Add PDFs from web browser, Add PDFs from iCloud, Add PDFs from email/messenger

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited PDF | $1.99 | one-time |


### EchoKey

[App page](https://appshunter.io/ios/app/echokey/id6757945339)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $12.99 | per year |


## Frequently asked questions

### Is PDF Watch Viewer free?

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

### Is EchoKey free?

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

### Do PDF Watch Viewer or EchoKey have ads?

Neither PDF Watch Viewer nor EchoKey shows ads.

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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.*