# Vellum vs OpenHTML

The clearest difference is price: OpenHTML at Free against Vellum's $1.99. Vellum's advantage is in-app purchases (none vs 1) and update cadence (daily vs every 5 days). On ads, device support and iOS requirement there is nothing between them.

OpenHTML is free to download; Vellum costs $1.99 up front. OpenHTML sells 1 one-off in-app purchase. Vellum asks for nothing beyond the download.

Vellum ships an update daily, OpenHTML every 5 days. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Vellum | OpenHTML |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/openhtml-html-pdf-and-markdown/id6776524508/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 5 days |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 19 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HAEDUN KIM](https://appshunter.io/developer/1896506869) | [吉帅 仇](https://appshunter.io/developer/1087837335) |

## What reviewers say

### Vellum

[App page](https://appshunter.io/ios/app/vellum-html-viewer/id6774885986)

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

**In-app purchases:** none


### OpenHTML

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

View HTML, Markdown, ZIP web projects, and source files privately on your device. Inspect and export rendered pages offline, diagnose rendering issues, and view code files securely. Designed for developers, students, and anyone needing to inspect web content safely.

**Highlights:** View HTML, Markdown, and source files, Import ZIP archives and web projects, Offline rendering with network access blocked by default, Diagnose rendering and resource issues, Export pages to PDF or long images, Private by default, no accounts or analytics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenHTML Pro | $0.99 | one-time |


## Frequently asked questions

### Is Vellum free?

Vellum costs $1.99, with no in-app purchases.

### Is OpenHTML free?

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

### Do Vellum or OpenHTML have ads?

Neither Vellum nor OpenHTML shows ads.

### Which is updated more often, Vellum or OpenHTML?

Vellum ships an update daily, and OpenHTML every 5 days. Most recently, Vellum was updated on October 13, 2026 and OpenHTML on October 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.*