# iSource Browser vs HTML Viewer Pro

The clearest difference is in-app purchases: iSource Browser at none against HTML Viewer Pro's 2. iSource Browser also leads on ads (none vs shown) and update cadence (every 3 months vs every 15 months). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.0 for iSource Browser against 3.9 for HTML Viewer Pro. Both are backed by a comparable volume of ratings — 21 and 45 respectively. Written reviews are what separate them: 50% of iSource Browser's written reviews are positive against 47% of HTML Viewer Pro's.

iSource Browser ships an update every 3 months, HTML Viewer Pro every 15 months. The most recent releases landed on August 1, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | iSource Browser | HTML Viewer Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (21 ratings)](https://appshunter.io/ios/app/isource-browser/id370764473/reviews)** | [3.9 (45 ratings)](https://appshunter.io/ios/app/html-viewer-pro/id1521187909/reviews) |
| Number of ratings | 21 | **45** |
| Positive reviews | **50.0% of reviews** | 47.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 15 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 33 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Gamu apps](https://appshunter.io/developer/366786599) | [Hayato Shimizu](https://appshunter.io/developer/1207195348) |

## What reviewers say

### iSource Browser

[App page](https://appshunter.io/ios/app/isource-browser/id370764473)

This web browser offers standard browsing capabilities along with advanced tools for inspecting web page source code, HTTP headers, and network information. It includes a JavaScript debugger and WHOIS lookup for in-depth site analysis.

**Highlights:** HTML source view, WHOIS lookup, DIG and HOST lookup, HTTP Headers inspection, JavaScript debug console, Integration with other apps

**Features:** macOS Compatibility

**In-app purchases:** none


### HTML Viewer Pro

[App page](https://appshunter.io/ios/app/html-viewer-pro/id1521187909)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly plan) | $1.99 | per month |
| Premium (Buying out) | $19.99 | one-time |


## Frequently asked questions

### Is iSource Browser free?

iSource Browser is free to download, with no in-app purchases.

### Is HTML Viewer Pro free?

HTML Viewer Pro is free to download, with in-app purchases available.

### Which has better reviews, iSource Browser or HTML Viewer Pro?

iSource Browser is rated higher. iSource Browser averages 4.0 out of 5 from 21 ratings, while HTML Viewer Pro averages 3.9 from 45 ratings.

### Do iSource Browser or HTML Viewer Pro have ads?

HTML Viewer Pro shows ads; iSource Browser does not.

### Which is updated more often, iSource Browser or HTML Viewer Pro?

iSource Browser ships an update every 3 months, and HTML Viewer Pro every 15 months. Most recently, iSource Browser was updated on August 1, 2026 and HTML Viewer Pro on September 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*