# HTML Viewer Pro vs JSON Editor Viewer XML PDF

The clearest difference is review sentiment: HTML Viewer Pro at 47% against JSON Editor Viewer XML PDF's 0%. HTML Viewer Pro also leads on rating (3.9 vs 1.0) and ratings volume (45 vs 2). JSON Editor Viewer XML PDF's advantage is in-app purchases (none vs 2) and ads (none vs shown). 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. JSON Editor Viewer XML PDF asks for nothing beyond the download.

HTML Viewer Pro holds the better App Store score, 3.9 against 1.0. That said, the two scores are not equally well evidenced: HTML Viewer Pro has 45 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 47% of HTML Viewer Pro's written reviews are positive against 0% of JSON Editor Viewer XML PDF's.

HTML Viewer Pro ships an update every 15 months, JSON Editor Viewer XML PDF every 2 months. The most recent releases landed on September 5, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | HTML Viewer Pro | JSON Editor Viewer XML PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (45 ratings)](https://appshunter.io/ios/app/html-viewer-pro/id1521187909/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/json-editor-viewer-xml-pdf/id6476981919/reviews) |
| Number of ratings | **45** | 2 |
| Positive reviews | **47.4% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 15 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 33 MB | 25 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) | [Haitam Baid](https://appshunter.io/developer/1725183609) |

## 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 |


### JSON Editor Viewer XML PDF

[App page](https://appshunter.io/ios/app/json-editor-viewer-xml-pdf/id6476981919)

This app allows users to view, edit, and manage JSON, XML, and PDF files in a single platform. It offers features like syntax highlighting, file management, and search capabilities for efficient data manipulation and document review.

**Highlights:** Multi-format compatibility (JSON, XML, PDF), Intuitive JSON editing, XML data management, PDF document viewing, Syntax highlighting, File management, Search and filter

**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 JSON Editor Viewer XML PDF free?

JSON Editor Viewer XML PDF is free to download, with no in-app purchases.

### Which has better reviews, HTML Viewer Pro or JSON Editor Viewer XML PDF?

HTML Viewer Pro is rated higher. HTML Viewer Pro averages 3.9 out of 5 from 45 ratings, while JSON Editor Viewer XML PDF averages 1.0 from 2 ratings.

### Do HTML Viewer Pro or JSON Editor Viewer XML PDF have ads?

HTML Viewer Pro shows ads; JSON Editor Viewer XML PDF does not.

### Which is updated more often, HTML Viewer Pro or JSON Editor Viewer XML PDF?

HTML Viewer Pro ships an update every 15 months, and JSON Editor Viewer XML PDF every 2 months. Most recently, HTML Viewer Pro was updated on September 5, 2026 and JSON Editor Viewer XML PDF on June 1, 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.*