# Ad Testing vs HTML Viewer Pro

The clearest difference is in-app purchases: Ad Testing at none against HTML Viewer Pro's 2. Ad Testing also leads on update cadence (every 4 months vs every 15 months). HTML Viewer Pro's advantage is review sentiment (49% vs 33%) and ratings volume (45 vs 6). On price, rating, ads and monetization model there is nothing between them.

Both are free to download. HTML Viewer Pro sells 2 in-app purchases, starting at $1.99 per month. Ad Testing asks for nothing beyond the download.

HTML Viewer Pro holds the better App Store score, 3.9 against 3.7. That said, the two scores are not equally well evidenced: HTML Viewer Pro has 45 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 33% of Ad Testing's written reviews are positive against 49% of HTML Viewer Pro's.

Ad Testing ships an update every 4 months, HTML Viewer Pro every 15 months. The most recent releases landed on September 21, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Ad Testing | HTML Viewer Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (6 ratings)](https://appshunter.io/ios/app/ad-testing/id1463016906/reviews) | **[3.9 (45 ratings)](https://appshunter.io/ios/app/html-viewer-pro/id1521187909/reviews)** |
| Number of ratings | 6 | **45** |
| Positive reviews | 33.3% of reviews | **49.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 months** | Every 15 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 37 MB | 33 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Unity Technologies ApS](https://appshunter.io/developer/305967445) | [Hayato Shimizu](https://appshunter.io/developer/1207195348) |

## What reviewers say

### Ad Testing

[App page](https://appshunter.io/ios/app/ad-testing/id1463016906)

Test interactive and video ad creatives in a native environment. Analyze and test playable, video, and AR ads to ensure they function correctly on the Unity Ads network.

**Highlights:** Test interactive ads, Test video ads, Test AR ads, Analyze ad creatives, Unity Ads network compatibility

**Features:** Vision Pro support

**In-app purchases:** none


### HTML Viewer Pro

[App page](https://appshunter.io/ios/app/html-viewer-pro/id1521187909)

View HTML source code from URLs or directly from Safari. This app offers multi-tab browsing, bookmarking, and search functionality. Customize the display with various themes, fonts, and user agents.

**Highlights:** View source code from URLs, View source code from Safari share, Multi-tab browsing, Bookmark and history management, Keyword search in source code, Switch between static and dynamic HTML, Customizable themes and fonts

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly plan) | $1.99 | per month |
| Premium (Buying out) | $19.99 | one-time |


## Frequently asked questions

### Is Ad Testing free?

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

### Is HTML Viewer Pro free?

HTML Viewer Pro is free to download, with in-app purchases available.

### Which has better reviews, Ad Testing or HTML Viewer Pro?

HTML Viewer Pro is rated higher. Ad Testing averages 3.7 out of 5 from 6 ratings, while HTML Viewer Pro averages 3.9 from 45 ratings.

### Do Ad Testing or HTML Viewer Pro have ads?

Both Ad Testing and HTML Viewer Pro show ads.

### Which is updated more often, Ad Testing or HTML Viewer Pro?

Ad Testing ships an update every 4 months, and HTML Viewer Pro every 15 months. Most recently, Ad Testing was updated on September 21, 2026 and HTML Viewer Pro on October 10, 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.*