HTML Viewer vs RV Level Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HTML Viewer
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.
- 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)
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Sitecase is your viewer for local HTML files on iPhone and iPad — local, private and usable offline, with no tracking. Import your HTML files via the Files app or the Share sheet and view them with full CSS and JavaScript support. You can also open complete folders with multiple files — whole projects or multi-page websites with images, CSS and JavaScript, not just single files (Pro). Perfect for web developers, students, teachers or anyone who wants to view HTML content on the go. FEATURES: • Full HTML, CSS and JavaScript rendering • Open whole folders: complete projects made of multiple files — multi-page websites with images, CSS and JavaScript (Pro) • Dark Mode support • Import files via the Share sheet or the Files app • Shortcuts & Siri: open saved files directly — even as an icon on your Home Screen • Pinch to zoom • Turn network access on or off anytime • View source code with syntax highlighting (Pro) • Text search within files (Pro) • Manage favorites (Pro) • Adjustable zoom level (Pro) • Turn JavaScript support on or off (Pro) PRIVACY: All your files stay local on your device. The app itself connects to no server and uses no analytics or tracking services. If an opened page intentionally loads online content, you can turn off network access anytime.
RV Level Pro
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.
- 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
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RV Level Pro helps RV owners level their rig using the iPhone's built-in motion sensors. Set the phone on a stable surface, calibrate for your phone and case, and read large front/back and side-to-side degree values from several feet away. The app gives simple guidance like Raise Front, Lower Front, Raise Left Side, and Raise Right Side. When both readings are inside your selected tolerance, the whole screen turns green so you know you're done. Optional voice guidance and iPad Display Mode make it easier to work outside while using an iPad as a large remote display. No Bluetooth leveling hardware, login, cloud account, or internet connection is required.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | HTML Viewer | RV Level Pro |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.7 (26 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 92.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 26 — better | 1 |
| Update frequency | Every 5 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.6 |
| Further details — not scored | ||
| Size | 21 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Dennis Bortmes | Brent Gaddis |
Customer experience
HTML Viewer
RV Level Pro
In-app purchases
HTML Viewer
- Sitecase Pro$5.99
RV Level Pro
No in-app purchases









