# Open Citadel vs DocNavy

The clearest difference is in-app purchases: Open Citadel at none against DocNavy's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DocNavy sells 2 in-app purchases, starting at $2.99 per month. Open Citadel asks for nothing beyond the download.

Open Citadel ships an update fortnightly, DocNavy weekly. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Open Citadel | DocNavy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Size | 95 MB | 12 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Thamsanqa Ncube](https://appshunter.io/developer/6789093614) | [Thi Thanh Van Do](https://appshunter.io/developer/6805051029) |

## What reviewers say

### Open Citadel

[App page](https://appshunter.io/ios/app/open-citadel-self-development/id6789093612)

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

**In-app purchases:** none


### DocNavy

[App page](https://appshunter.io/ios/app/docnavy-docs-to-markdown/id6805051027)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DocNavy Pro - Monthly | $2.99 | per month |
| DocNavy Pro - Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Open Citadel free?

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

### Is DocNavy free?

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

### Do Open Citadel or DocNavy have ads?

Neither Open Citadel nor DocNavy shows ads.

### Which is updated more often, Open Citadel or DocNavy?

Open Citadel ships an update fortnightly, and DocNavy weekly. Most recently, Open Citadel was updated on October 20, 2026 and DocNavy on October 24, 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.*