# HTML Dual Viewer vs All File Converter

The clearest difference is rating: All File Converter at 3.3 against HTML Dual Viewer's 2.7. HTML Dual Viewer's advantage is in-app purchases (none vs 4) and update cadence (every 3 weeks vs every 3 months). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. All File Converter sells 4 one-off in-app purchases. HTML Dual Viewer asks for nothing beyond the download.

All File Converter holds the better App Store score, 3.3 against 2.7. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

HTML Dual Viewer ships an update every 3 weeks, All File Converter every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | HTML Dual Viewer | All File Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (3 ratings)](https://appshunter.io/ios/app/html-dual-viewer/id1027385656/reviews) | **[3.3 (7 ratings)](https://appshunter.io/ios/app/all-file-converter/id1545108179/reviews)** |
| Number of ratings | 3 | **7** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 311 MB |
| Requires iOS | **8.4** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Makoto Nishimoto](https://appshunter.io/developer/896702438) | [OPULA SOFTWARE DEVLOPMENT (OPC) PRIVATE LIMITED](https://appshunter.io/developer/1501299758) |

## What reviewers say

### HTML Dual Viewer

[App page](https://appshunter.io/ios/app/html-dual-viewer/id1027385656)

View HTML source code and browse web pages side-by-side. Features a syntax highlighter and Google search integration for easy code checking and site analysis. Allows real-time updates of HTML source as you navigate.

**Highlights:** Dual screen HTML viewer, Syntax highlighter, Google search integration, Real-time HTML source updates, Adjustable screen width, Full screen mode

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### All File Converter

[App page](https://appshunter.io/ios/app/all-file-converter/id1545108179)

This app acts as a universal file converter, supporting a wide range of document, image, audio, and video formats. It allows users to easily change file extensions, compress media, and even scan documents, all processed in the cloud for speed and battery efficiency.

**Highlights:** Convert documents (PDF, DOC, TXT, PPT, WORD, XLS), Convert images (JPG, PNG, BMP, GIF, EPS, PSD), Convert video to various formats (MP4, MKV, AVI, MOV), Convert audio to various formats (MP3, WAV, AAC), Compress video, GIF, and image files, Scan documents, Cloud-based processing

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $0.99 | one-time |
| 3 Months | $1.99 | one-time |
| 6 Months | $2.99 | one-time |
| Yearly | $4.99 | one-time |


## Frequently asked questions

### Is HTML Dual Viewer free?

HTML Dual Viewer is free to download, with no in-app purchases.

### Is All File Converter free?

All File Converter is free to download, with in-app purchases available.

### Which has better reviews, HTML Dual Viewer or All File Converter?

All File Converter is rated higher. HTML Dual Viewer averages 2.7 out of 5 from 3 ratings, while All File Converter averages 3.3 from 7 ratings.

### Do HTML Dual Viewer or All File Converter have ads?

Neither HTML Dual Viewer nor All File Converter shows ads.

### Which is updated more often, HTML Dual Viewer or All File Converter?

HTML Dual Viewer ships an update every 3 weeks, and All File Converter every 3 months. Most recently, HTML Dual Viewer was updated on October 24, 2026 and All File Converter on October 24, 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.*