HTML Viewer Pro vs Mercury Interpret
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HTML Viewer Pro
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.
- 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
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It is a multi-functional HTML source viewer. You can view the source code by URLs, and of course, you can also view the source code from Safari's share button. Since it is the latest version of the app, it covers almost all the features of other apps. [Features & Functions] - Browser and source code switching. - Multi-tab browsing. - Display bookmarks and history. - Search for keywords in the source code. - Switch between static and dynamic HTML. - Changing the user agent. - Display non-HTML languages. - Use the cloud, such as iCloud, Dropbox, OneDrive, etc. - Use local files in the iPhone and iPad. - Balanced light operation. [View source code] - About 90 different design themes available. - Change the font, size and line spacing. - Switch between static and dynamic HTML. - Support for almost all programming languages (over 180). [Terms & Conditions] https://www.hayaya.net/terms-conditions/html-viewer.html [Privacy Policy] https://www.hayaya.net/privacy-policy/html-viewer.html
Mercury Interpret
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Mercury Interpret is an advanced AI-powered language interpretation tool that automatically performs speech recognition, error correction, and real-time transcription. With support for instant interpretation across multiple languages, it transforms spoken words that were once unintelligible into clear, understandable text. Powered by an enhanced AI core, the Mercury series embodies the spirit of the messenger god, amplifying the intelligence and efficiency of information processing.
Screenshots
Verdict
The clearest difference is in-app purchases: Mercury Interpret at none against HTML Viewer Pro's 2. Mercury Interpret also leads on ads (none vs shown) and update cadence (fortnightly vs every 15 months). On price, 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
Both are free to download. HTML Viewer Pro sells 2 in-app purchases, starting at $1.99 per month. Mercury Interpret asks for nothing beyond the download.
HTML Viewer Pro ships an update every 15 months, Mercury Interpret fortnightly. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.
| Parameter | HTML Viewer Pro | Mercury Interpret |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (45 ratings) — better | — |
| Positive reviews | 49.1% of reviews | — |
| Number of ratings | 45 — better | — |
| Update frequency | Every 15 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 33 MB | 24 MB |
| Age rating | 17+ | 4+ |
| Developer | Hayato Shimizu | Wen-Chi Chou |
In-app purchases
HTML Viewer Pro
- Premium (Monthly plan)$1.991 Month
- Premium (Buying out)$19.99
Mercury Interpret
No in-app purchases
Questions
Is HTML Viewer Pro free?
Is Mercury Interpret free?
Do HTML Viewer Pro or Mercury Interpret have ads?
Which is updated more often, HTML Viewer Pro or Mercury Interpret?
Other comparisons
