# Seobility SEO Check vs HTML Viewer Pro

The clearest difference is review sentiment: Seobility SEO Check at 94% against HTML Viewer Pro's 49%. Seobility SEO Check also leads on rating (4.9 vs 3.9) and in-app purchases (none vs 2). On price and device support there is nothing between them.

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

Seobility SEO Check holds the better App Store score, 4.9 against 3.9. That said, the two scores are not equally well evidenced: Seobility SEO Check has 337 ratings behind it against 45, so its average is the more settled of the two. Written reviews point the same way: 94% of Seobility SEO Check's written reviews are positive against 49% of HTML Viewer Pro's.

Seobility SEO Check ships an update every 3 months, HTML Viewer Pro every 15 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Seobility SEO Check | HTML Viewer Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (337 ratings)](https://appshunter.io/ios/app/seobility-seo-check/id1462412307/reviews)** | [3.9 (45 ratings)](https://appshunter.io/ios/app/html-viewer-pro/id1521187909/reviews) |
| Number of ratings | **337** | 45 |
| Positive reviews | **93.8% of reviews** | 49.1% 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 | 56 MB | 33 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Seobility GmbH](https://appshunter.io/developer/1462412306) | [Hayato Shimizu](https://appshunter.io/developer/1207195348) |

## What reviewers say

### Seobility SEO Check

[App page](https://appshunter.io/ios/app/seobility-seo-check/id1462412307)

This app analyzes your website's SEO compliance, providing detailed checks on meta information, page quality, headings, links, and server configuration. It offers actionable tips for optimizing your site for better search engine rankings and sustainable SEO success.

**Highlights:** Meta-information analysis, Page quality checks, Heading structure analysis, Inbound and outbound link evaluation, External factor assessment, Server configuration review

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 💡 Provides a lot of information
- 🚀 Fast results
- 💰 Free to use
- ✅ Accurate SEO suggestions

**Requested features**

- Show image names for images without alt tags
- Display multiple anchor texts
- Add more details


### 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 Seobility SEO Check free?

Seobility SEO Check 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, Seobility SEO Check or HTML Viewer Pro?

Seobility SEO Check is rated higher. Seobility SEO Check averages 4.9 out of 5 from 337 ratings, while HTML Viewer Pro averages 3.9 from 45 ratings.

### Do Seobility SEO Check or HTML Viewer Pro have ads?

HTML Viewer Pro shows ads; Seobility SEO Check does not.

### Which is updated more often, Seobility SEO Check or HTML Viewer Pro?

Seobility SEO Check ships an update every 3 months, and HTML Viewer Pro every 15 months. Most recently, Seobility SEO Check was updated on October 15, 2026 and HTML Viewer Pro on October 10, 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.*