HTML Viewer Pro vs Zenstrin
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
Zenstrin
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Zenstrin is an all in one property management software for tenants, home owners. Tenants - View all your tenancy information - See when payments are due - Raise issues and track their progress Home Owners - View your property information - Track the performance of your properties. - See when payments are due
Screenshots
Verdict
The clearest difference is in-app purchases: Zenstrin at none against HTML Viewer Pro's 2. Zenstrin also leads on ads (none vs shown) and update cadence (every 3 months vs every 15 months). HTML Viewer Pro's advantage is iOS requirement (12.0 vs 15.1). On price and device support 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. Zenstrin asks for nothing beyond the download.
HTML Viewer Pro ships an update every 15 months, Zenstrin every 3 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | HTML Viewer Pro | Zenstrin |
|---|---|---|
| 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 | Every 3 months — 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 | 15.1 |
| Further details — not scored | ||
| Size | 33 MB | 36 MB |
| Age rating | 17+ | 4+ |
| Developer | Hayato Shimizu | Zenstrin limited |
In-app purchases
HTML Viewer Pro
- Premium (Monthly plan)$1.991 Month
- Premium (Buying out)$19.99
Zenstrin
No in-app purchases
Questions
Is HTML Viewer Pro free?
Is Zenstrin free?
Do HTML Viewer Pro or Zenstrin have ads?
Which is updated more often, HTML Viewer Pro or Zenstrin?
Other comparisons
