# claustra vs OpenHTML

claustra and OpenHTML are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. claustra sells 3 in-app purchases, starting at $0.99 per month and OpenHTML sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

claustra ships an update every 4 days, OpenHTML every 5 days. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | claustra | OpenHTML |
| --- | --- | --- |
| Price | Free | 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 | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 19 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [晗 林](https://appshunter.io/developer/1768801333) | [吉帅 仇](https://appshunter.io/developer/1087837335) |

## What reviewers say

### claustra

[App page](https://appshunter.io/ios/app/claustra/id6760296074)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Claustra Premium Monthly | $0.99 | per month |
| Claustra Premium Yearly | $9.99 | per year |
| Claustra Premium Lifetime | $24.99 | one-time |


### 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 claustra free?

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

### Is OpenHTML free?

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

### Do claustra or OpenHTML have ads?

Neither claustra nor OpenHTML shows ads.

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

claustra ships an update every 4 days, and OpenHTML every 5 days. Most recently, claustra was updated on October 12, 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.*