# Open Campus Dagen vs HTML Keep

The clearest difference is in-app purchases: Open Campus Dagen at none against HTML Keep's 4. Open Campus Dagen also leads on iOS requirement (12.4 vs 17.0). HTML Keep's advantage is update cadence (every 4 days vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. HTML Keep sells 4 in-app purchases, starting at $5.99 per month. Open Campus Dagen asks for nothing beyond the download.

Open Campus Dagen ships an update every 5 months, HTML Keep every 4 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Open Campus Dagen | HTML Keep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/html-keep-mobile-html-viewer/id6767142789/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 24 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Delft University of Technology](https://appshunter.io/developer/352877212) | [光 杨](https://appshunter.io/developer/1893576790) |

## What reviewers say

### Open Campus Dagen

[App page](https://appshunter.io/ios/app/open-campus-dagen/id1590226691)

**Features:** macOS Compatibility

**In-app purchases:** none


### HTML Keep

[App page](https://appshunter.io/ios/app/html-keep-mobile-html-viewer/id6767142789)

Easily preview local HTML, Markdown, and ZIP files on your mobile device. Quickly open documents, web pages, or notes received or saved on your phone without needing a computer.

**Highlights:** Local HTML file preview, Native Markdown rendering, ZIP web package import, No account or login required, Simple, fast interface, Offline content browsing

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HTML Pocket Pro Monthly | $5.99 | per month |
| HTML Pocket Pro Yearly | $29.99 | per year |
| HTML Pocket Premium Lifetime Promo | $28.49 | one-time |
| HTML Pocket Premium Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Open Campus Dagen free?

Open Campus Dagen is free to download, with no in-app purchases.

### Is HTML Keep free?

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

### Do Open Campus Dagen or HTML Keep have ads?

Neither Open Campus Dagen nor HTML Keep shows ads.

### Which is updated more often, Open Campus Dagen or HTML Keep?

Open Campus Dagen ships an update every 5 months, and HTML Keep every 4 days. Most recently, Open Campus Dagen was updated on October 27, 2026 and HTML Keep on October 31, 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.*