# HTML Viewer Pro vs Percent X

The clearest difference is price: HTML Viewer Pro at Free against Percent X's $0.49. Percent X's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

HTML Viewer Pro is free to download; Percent X costs $0.49 up front. HTML Viewer Pro sells 2 in-app purchases, starting at $1.99 per month. Percent X asks for nothing beyond the download.

HTML Viewer Pro ships an update every 15 months, Percent X every 4 months. The most recent releases landed on September 5, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | HTML Viewer Pro | Percent X |
| --- | --- | --- |
| Price | **Free** | $0.49 |
| Rating | **[3.9 (45 ratings)](https://appshunter.io/ios/app/html-viewer-pro/id1521187909/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 47.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 15 months | **Every 4 months** |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 0 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Hayato Shimizu](https://appshunter.io/developer/1207195348) | [Stein Erik Nilsen](https://appshunter.io/developer/1737251651) |

## 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 |


### Percent X

[App page](https://appshunter.io/ios/app/percent-x/id6479808653)

**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 Percent X free?

Percent X costs $0.49, with no in-app purchases.

### Do HTML Viewer Pro or Percent X have ads?

HTML Viewer Pro shows ads; Percent X does not.

### Which is updated more often, HTML Viewer Pro or Percent X?

HTML Viewer Pro ships an update every 15 months, and Percent X every 4 months. Most recently, HTML Viewer Pro was updated on September 5, 2026 and Percent X on September 16, 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.*