# PDF Watch Viewer vs StudyWrist

The clearest difference is price: PDF Watch Viewer at Free against StudyWrist's $0.99. StudyWrist's advantage is ads (none vs shown) and update cadence (every 3 days vs every 5 months). On in-app purchases, device support and iOS requirement there is nothing between them.

PDF Watch Viewer is free to download; StudyWrist costs $0.99 up front. PDF Watch Viewer sells 4 in-app purchases, starting at $2.99 per 7 days and StudyWrist sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

PDF Watch Viewer ships an update every 5 months, StudyWrist every 3 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PDF Watch Viewer | StudyWrist |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/studywrist/id6762534169/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 days** |
| Monetization | — | Freemium |
| Best chart rank | — | **#90** |
| Size | 9 MB | 7 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [DEEPLY AI](https://appshunter.io/developer/1809787876) | [Nathan Pawlik](https://appshunter.io/developer/1867129680) |

## What reviewers say

### PDF Watch Viewer

[App page](https://appshunter.io/ios/app/pdf-watch-viewer-wristview/id6761654564)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WristView Premium Weekly | $2.99 | per 7 days |
| WristView Premium Monthly | $7.99 | per month |
| WristView Premium Yearly | $29.99 | per year |
| WristView Premium Lifetime | $49.99 | one-time |


### StudyWrist

[App page](https://appshunter.io/ios/app/studywrist/id6762534169)

**Currently charting:** #90 Top Paid · Education (US App Store)

Access essential academic tools directly from your Apple Watch. Features a formula library for physics, chemistry, and math, a scientific calculator, and a PDF viewer for study materials. Quickly access web links to educational resources without needing your phone.

**Highlights:** Formula library (physics, chemistry, math), Scientific calculator, PDF notes viewer, Quick web links to study resources, Watch-based access

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |


## Frequently asked questions

### Is PDF Watch Viewer free?

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

### Is StudyWrist free?

StudyWrist costs $0.99, and also offers in-app purchases.

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

PDF Watch Viewer shows ads; StudyWrist does not.

### Which is updated more often, PDF Watch Viewer or StudyWrist?

PDF Watch Viewer ships an update every 5 months, and StudyWrist every 3 days. Most recently, PDF Watch Viewer was updated on October 25, 2026 and StudyWrist on October 31, 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.*