# DONIA vs CoNav

The clearest difference is price: DONIA at Free against CoNav's $6.99. DONIA also leads on rating (4.5 vs 4.0) and ratings volume (31 vs 6). CoNav's advantage is in-app purchases (none vs 2) and review sentiment (83% vs 59%). On update cadence and ads there is nothing between them.

DONIA is free to download; CoNav costs $6.99 up front. DONIA sells 2 in-app purchases, starting at $2.49 per month. CoNav asks for nothing beyond the download.

DONIA holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: DONIA has 31 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 59% of DONIA's written reviews are positive against 83% of CoNav's, so the app with the better star average is not the one people write more warmly about.

DONIA ships an update fortnightly, CoNav every 3 weeks. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | DONIA | CoNav |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | **[4.5 (31 ratings)](https://appshunter.io/ios/app/donia/id751225905/reviews)** | [4.0 (6 ratings)](https://appshunter.io/ios/app/conav/id1456729642/reviews) |
| Number of ratings | **31** | 6 |
| Positive reviews | 59.3% of reviews | **83.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | **Freemium** | Paid |
| Size | 61 MB | 17 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andromede Oceanologie](https://appshunter.io/developer/740679172) | [Vladyslav Yarmak](https://appshunter.io/developer/1456545549) |

## What reviewers say

### DONIA

[App page](https://appshunter.io/ios/app/donia/id751225905)

This app provides detailed seabed visualization and marine information for safe and respectful sea navigation. It allows users to book mooring buoys, share observations, and monitor their vessels. Access premium features like high-definition charts for enhanced planning and exploration.

**Highlights:** Seabed visualization, Marine information access, Mooring buoy booking, User observation sharing, Navigation preparation and monitoring, Mooring monitoring with alarms, Offline mapping

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DONIA® Premium Monthly | $2.49 | per month |
| DONIA® Premium Version | $22.99 | per year |


### CoNav

[App page](https://appshunter.io/ios/app/conav/id1456729642)

This app provides essential tools for deck officers, including compass error calculation, celestial navigation, and ETA calculations. It offers offline functionality with precise algorithms for various maritime tasks, such as unit conversion and port information.

**Highlights:** Compass Error Calculation, Celestial Navigation, ETA Calculation, Port UN LOCODE Database, Units Converter, True Wind Calculation, Offline Functionality

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DONIA free?

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

### Is CoNav free?

CoNav costs $6.99, with no in-app purchases.

### Which has better reviews, DONIA or CoNav?

DONIA is rated higher. DONIA averages 4.5 out of 5 from 31 ratings, while CoNav averages 4.0 from 6 ratings.

### Do DONIA or CoNav have ads?

Neither DONIA nor CoNav shows ads.

### Which is updated more often, DONIA or CoNav?

DONIA ships an update fortnightly, and CoNav every 3 weeks. Most recently, DONIA was updated on September 22, 2026 and CoNav on September 23, 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.*