# Block Spam vs OpenHTML

The clearest difference is price: OpenHTML at Free against Block Spam's $0.99. OpenHTML also leads on update cadence (every 5 days vs every 4 months). Block Spam's advantage is in-app purchases (none vs 1) and iOS requirement (15.6 vs 18.0). On ads and device support there is nothing between them.

OpenHTML is free to download; Block Spam costs $0.99 up front. OpenHTML sells 1 one-off in-app purchase. Block Spam asks for nothing beyond the download.

Block Spam ships an update every 4 months, OpenHTML every 5 days. The most recent releases landed on November 11, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Block Spam | OpenHTML |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/openhtml-html-pdf-and-markdown/id6776524508/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 20 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [恒俭 董](https://appshunter.io/developer/947356968) | [吉帅 仇](https://appshunter.io/developer/1087837335) |

## What reviewers say

### Block Spam

[App page](https://appshunter.io/ios/app/block-spam/id1493095946)

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

**In-app purchases:** none


### OpenHTML

[App page](https://appshunter.io/ios/app/openhtml-html-pdf-and-markdown/id6776524508)

A private, on-device viewer for HTML, Markdown, ZIP web projects, and source files on iOS. Inspect files offline, diagnose rendering issues, and export clean copies. Designed for developers, students, and anyone needing to safely view web content.

**Highlights:** View HTML, Markdown, ZIP archives, Offline preview with network access off, Diagnose rendering and JavaScript issues, Code-friendly reader for JSON, XML, source files, Export pages to PDF or long images (Pro), iCloud Drive integration for multi-device access (Pro)

**Features:** macOS Compatibility, Safari Extension, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenHTML Pro | $2.99 | one-time |


## Frequently asked questions

### Is Block Spam free?

Block Spam costs $0.99, with no in-app purchases.

### Is OpenHTML free?

OpenHTML is free to download, with in-app purchases available.

### Do Block Spam or OpenHTML have ads?

Neither Block Spam nor OpenHTML shows ads.

### Which is updated more often, Block Spam or OpenHTML?

Block Spam ships an update every 4 months, and OpenHTML every 5 days. Most recently, Block Spam was updated on November 11, 2026 and OpenHTML on November 13, 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.*