# HTML Viewer Pro vs Mock Studio

The clearest difference is in-app purchases: Mock Studio at none against HTML Viewer Pro's 2. Mock Studio also leads on ads (none vs shown) and update cadence (every 4 days vs every 15 months). On price, device support and iOS requirement there is nothing between them.

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

HTML Viewer Pro ships an update every 15 months, Mock Studio every 4 days. The most recent releases landed on October 10, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | HTML Viewer Pro | Mock Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (45 ratings)](https://appshunter.io/ios/app/html-viewer-pro/id1521187909/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 49.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 15 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 143 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Hayato Shimizu](https://appshunter.io/developer/1207195348) | [Hrishi Suthar](https://appshunter.io/developer/1660005858) |

## What reviewers say

### 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 |


### Mock Studio

[App page](https://appshunter.io/ios/app/mock-studio/id6752537633)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HTML Viewer Pro free?

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

### Is Mock Studio free?

Mock Studio is free to download, with no in-app purchases.

### Do HTML Viewer Pro or Mock Studio have ads?

HTML Viewer Pro shows ads; Mock Studio does not.

### Which is updated more often, HTML Viewer Pro or Mock Studio?

HTML Viewer Pro ships an update every 15 months, and Mock Studio every 4 days. Most recently, HTML Viewer Pro was updated on October 10, 2026 and Mock Studio on September 25, 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.*