# PDF Watch Viewer vs LockScreen Notes Calendar

The clearest difference is in-app purchases: LockScreen Notes Calendar at none against PDF Watch Viewer's 1. PDF Watch Viewer's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17). On price, update cadence and device support there is nothing between them.

Both are free to download. PDF Watch Viewer sells 1 one-off in-app purchase. LockScreen Notes Calendar asks for nothing beyond the download.

PDF Watch Viewer ships an update every 2 months, LockScreen Notes Calendar monthly. The most recent releases landed on October 20, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | PDF Watch Viewer | LockScreen Notes Calendar |
| --- | --- | --- |
| 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 | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 106 MB |
| Requires iOS | **15.0** | 17 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stefano Russello](https://appshunter.io/developer/543198306) | [Huy Van](https://appshunter.io/developer/1651079168) |

## 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 |


### LockScreen Notes Calendar

[App page](https://appshunter.io/ios/app/lockscreen-notes-calendar/id6802377051)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Watch Viewer free?

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

### Is LockScreen Notes Calendar free?

LockScreen Notes Calendar is free to download, with no in-app purchases.

### Do PDF Watch Viewer or LockScreen Notes Calendar have ads?

LockScreen Notes Calendar shows ads; PDF Watch Viewer does not.

### Which is updated more often, PDF Watch Viewer or LockScreen Notes Calendar?

PDF Watch Viewer ships an update every 2 months, and LockScreen Notes Calendar monthly. Most recently, PDF Watch Viewer was updated on October 20, 2026 and LockScreen Notes Calendar on October 12, 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.*