# PDF Watermark Assistant vs Umbra Browser

The clearest difference is price: Umbra Browser at Free against PDF Watermark Assistant's $0.99. Umbra Browser also leads on update cadence (every 2 months vs every 5 months). PDF Watermark Assistant's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Umbra Browser is free to download; PDF Watermark Assistant costs $0.99 up front. Umbra Browser sells 3 in-app purchases, starting at $3.99 per month. PDF Watermark Assistant asks for nothing beyond the download.

PDF Watermark Assistant ships an update every 5 months, Umbra Browser every 2 months. The most recent releases landed on October 28, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | PDF Watermark Assistant | Umbra Browser |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/umbra-browser/id6761460876/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 5 MB | 3 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [乐祥 胡](https://appshunter.io/developer/1572365721) | [Kevin Stewart](https://appshunter.io/developer/1840294398) |

## What reviewers say

### PDF Watermark Assistant

[App page](https://appshunter.io/ios/app/pdf-watermark-assistant/id6747923103)

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

**In-app purchases:** none


### Umbra Browser

[App page](https://appshunter.io/ios/app/umbra-browser/id6761460876)

A privacy-focused browser that isolates each tab into a secure vault, blocking ads and trackers. It offers encrypted bookmarks, anti-fingerprinting, and optional integration with a password manager. All features are available for free.

**Highlights:** Tab isolation with per-tab data destruction, Built-in ad and tracker blocking, Anti-fingerprinting technologies, Encrypted bookmarks and DNS-over-HTTPS, Optional password manager integration, Reader mode for distraction-free browsing, Userscript support for custom functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Eclipse Monthly | $3.99 | per month |
| Eclipse Yearly | $29.99 | per year |
| Eclipse Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is PDF Watermark Assistant free?

PDF Watermark Assistant costs $0.99, with no in-app purchases.

### Is Umbra Browser free?

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

### Do PDF Watermark Assistant or Umbra Browser have ads?

Neither PDF Watermark Assistant nor Umbra Browser shows ads.

### Which is updated more often, PDF Watermark Assistant or Umbra Browser?

PDF Watermark Assistant ships an update every 5 months, and Umbra Browser every 2 months. Most recently, PDF Watermark Assistant was updated on October 28, 2026 and Umbra Browser on October 18, 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.*