# HTML Viewer vs RV Level Pro

The clearest difference is price: HTML Viewer at Free against RV Level Pro's $2.99. HTML Viewer also leads on ratings volume (26 vs 1) and update cadence (every 5 days vs fortnightly). RV Level Pro's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.7). On review sentiment, ads, device support and iOS requirement there is nothing between them.

HTML Viewer is free to download; RV Level Pro costs $2.99 up front. HTML Viewer sells 1 one-off in-app purchase. RV Level Pro asks for nothing beyond the download.

RV Level Pro holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: HTML Viewer has 26 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 93% of HTML Viewer's written reviews are positive against 100% of RV Level Pro's.

HTML Viewer ships an update every 5 days, RV Level Pro fortnightly. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | HTML Viewer | RV Level Pro |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [4.7 (26 ratings)](https://appshunter.io/ios/app/html-viewer-sitecase/id6762896369/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rv-level-pro/id6778530164/reviews)** |
| Number of ratings | **26** | 1 |
| Positive reviews | 92.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Fortnightly |
| Monetization | **Freemium** | Paid |
| Size | 21 MB | 12 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dennis Bortmes](https://appshunter.io/developer/1591683094) | [Brent Gaddis](https://appshunter.io/developer/1877726876) |

## What reviewers say

### HTML Viewer

[App page](https://appshunter.io/ios/app/html-viewer-sitecase/id6762896369)

This app allows you to view HTML files directly on your iPhone and iPad, offline and without tracking. It supports full JavaScript and CSS rendering, making it ideal for developers, students, and educators.

**Highlights:** Offline HTML rendering, Full JavaScript and CSS support, Import via Files app or Share Sheet, Dark Mode support, Pinch-to-zoom functionality, View source code with syntax highlighting (Pro)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sitecase Pro | $5.99 | one-time |


### RV Level Pro

[App page](https://appshunter.io/ios/app/rv-level-pro/id6778530164)

This app uses your iPhone's motion sensors to help RV owners achieve a perfectly level rig. It provides clear visual and optional voice guidance, turning the screen green when your RV is properly leveled within your set tolerance.

**Highlights:** Uses iPhone motion sensors, Displays front/back and side-to-side degree values, Provides simple leveling guidance, Visual confirmation when leveled, Optional voice guidance, iPad Display Mode for remote viewing

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

**In-app purchases:** none


## Frequently asked questions

### Is HTML Viewer free?

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

### Is RV Level Pro free?

RV Level Pro costs $2.99, with no in-app purchases.

### Which has better reviews, HTML Viewer or RV Level Pro?

RV Level Pro is rated higher. HTML Viewer averages 4.7 out of 5 from 26 ratings, while RV Level Pro averages 5.0 from 1 ratings.

### Do HTML Viewer or RV Level Pro have ads?

Neither HTML Viewer nor RV Level Pro shows ads.

### Which is updated more often, HTML Viewer or RV Level Pro?

HTML Viewer ships an update every 5 days, and RV Level Pro fortnightly. Most recently, HTML Viewer was updated on October 13, 2026 and RV Level Pro on October 6, 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.*