Comparison

HTML Viewer Pro vs USS Mobile

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

USS Mobile

Features
Read full description

TrustLayer USS Mobile brings enterprise-grade web security and cloud application control to mobile devices, extending your existing TrustLayer deployment to protect users wherever they work. This app integrates with the CloudUSS service to enable secure, policy-driven mobile access to the internet and SaaS applications without compromising user experience. Key Capabilities: Secure Web Access: Protect users from malicious, risky, or non-compliant websites in real time. Cloud Application Control (CASB): Enforce granular action-level policies across thousands of sanctioned and unsanctioned SaaS applications. Private Relay Architecture: Routes traffic securely through TrustLayer enforcement points, ensuring protection is always close to the user. Consistent Policy Enforcement: Apply the same security policies used across your organisation to mobile devices. Zero-Touch Operation: Runs seamlessly in the background with minimal user interaction. Optimised for Mobile: Low latency and efficient performance. How It Works: Once authenticated via SSO, the app securely associates the device with your TrustLayer tenant and establishes a protected connection via a private relay. All http/https web traffic is inspected and enforced according to your organisation’s security policies. Important: Requires an active TrustLayer subscription and tenant. Users must be provisioned by their organisation prior to use. The app installs a configuration profile containing a certificate in order to trust the TrustLayer private relay. TrustLayer Mobile Gateway ensures your users remain protected, compliant, and productive, no matter where they connect from.

Screenshots

HTML Viewer Pro4 screens
USS Mobile4 screens

Verdict

The call

The clearest difference is in-app purchases: USS Mobile at none against HTML Viewer Pro's 2. USS Mobile 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 17.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. HTML Viewer Pro sells 2 in-app purchases, starting at $1.99 per month. USS Mobile asks for nothing beyond the download.

UpkeepUpdate frequency

HTML Viewer Pro ships an update every 15 months, USS Mobile every 2 months. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 6 level
HTML Viewer Pro versus USS Mobile: the parameters behind the verdict, then further details
ParameterHTML Viewer ProUSS Mobile
PriceFreeFree
Rating3.9 (45 ratings) — better—
Positive reviews49.1% of reviews—
Number of ratings45 — better—
Update frequencyEvery 15 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size33 MB4 MB
Age rating17+4+
DeveloperHayato ShimizuTrustLayer

In-app purchases

2 purchases

HTML Viewer Pro

Subscriptions1
  • Premium (Monthly plan)$1.991 Month
One-time1
  • Premium (Buying out)$19.99
None

USS Mobile

No in-app purchases

Questions

Is HTML Viewer Pro free?
HTML Viewer Pro is free to download, with in-app purchases available.
Is USS Mobile free?
USS Mobile is free to download, with no in-app purchases.
Do HTML Viewer Pro or USS Mobile have ads?
HTML Viewer Pro shows ads; USS Mobile does not.
Which is updated more often, HTML Viewer Pro or USS Mobile?
HTML Viewer Pro ships an update every 15 months, and USS Mobile every 2 months. Most recently, HTML Viewer Pro was updated on October 10, 2026 and USS Mobile on October 2, 2026.

Other comparisons