HTML Viewer Pro vs Atmosic DevTools
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
Atmosic DevTools
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Demo interacting with Atmosic Bluetooth LE devices. - Monitor the sensor data (temperature/humidity/gravity vectors) - Config the device by AT Command - Upgrade by OTA
Screenshots
Verdict
The clearest difference is in-app purchases: Atmosic DevTools at none against HTML Viewer Pro's 2. Atmosic DevTools also leads on ads (none vs shown) and update cadence (every 2 months vs every 15 months). HTML Viewer Pro's advantage is iOS requirement (12.0 vs 14.5). 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. Atmosic DevTools asks for nothing beyond the download.
HTML Viewer Pro ships an update every 15 months, Atmosic DevTools every 2 months. The most recent releases landed on September 5, 2026 and September 17, 2026 respectively.
| Parameter | HTML Viewer Pro | Atmosic DevTools |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (45 ratings) — better | — |
| Positive reviews | 47.4% of reviews | — |
| Number of ratings | 45 — better | — |
| Update frequency | Every 15 months | Every 2 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 | 14.5 |
| Further details — not scored | ||
| Size | 33 MB | 7 MB |
| Age rating | 17+ | 4+ |
| Developer | Hayato Shimizu | Atmosic Technologies, Inc. |
In-app purchases
HTML Viewer Pro
- Premium (Monthly plan)$1.991 Month
- Premium (Buying out)$19.99
Atmosic DevTools
No in-app purchases
Questions
Is HTML Viewer Pro free?
Is Atmosic DevTools free?
Do HTML Viewer Pro or Atmosic DevTools have ads?
Which is updated more often, HTML Viewer Pro or Atmosic DevTools?
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