C vs CoNav
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
C
Access up-to-date nautical charts for global exploration and planning. Save points of interest and routes, record tracks, and view marine weather. Upgrade for offline maps, GPS, and advanced features like shaded relief and AIS.
- Free chart viewer
- Autorouting
- Personal waypoints
- Track recording
- Marine weather forecasts
- Offline map downloads
- High-resolution bathymetry
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The C-MAP® App is the perfect companion for recreational boaters and water-lovers. Available on Mobile, Tablet or PC, you’ll always be able to access the most up to date C-MAP charts, wherever in the world you are. With full features, allowing you to explore, plan and save Points of Interest and Routes from wherever you are, the C-MAP App is the perfect aid to navigation for savvy boaters. The C-MAP App Includes: - FREE Chart Viewer - Autorouting™ – find the best route to your favourite places - Personal Waypoints - Track Recording - Thousands of pre-loaded Points of Interest - Marine Weather Forecast - Weather Along the Route - Weather Overlay - Chart Personalisation - Import & Export GPX Files – share your Routes, Tracks or Waypoints with friends - Measure Distance Tool Upgrade to Premium to unlock additional features, including: - Full GPS Functionality - Offline Map Downloads - REVEAL Shaded Relief - High-Resolution Bathymetry - Custom Depth Shading - AIS & C-MAP Traffic Try before you buy… Experience C-MAP App Premium for yourself, with a free 14-day trial (3-day trial in Denmark and Sweden). The C-MAP App updates on a continual basis, ensuring the latest, most up-to-date maps are always at your fingertips. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Links to Your Privacy Policy and Terms of Use. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Privacy Policy: https://www.brunswick.com/dsar Terms of Service https://appchart.c-map.com/tos.html
CoNav
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.
- Compass Error Calculation
- Celestial Navigation
- ETA Calculation
- Port UN LOCODE Database
- Units Converter
- True Wind Calculation
- Offline Functionality
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Deck Officer's Tools: - Compass Error Calculation - Celestial Navigation - E.T.A Calculation - Port UN LOCODE - Units Converter - True Wind Calculation The app runs offline and all calculations are done within the app using precise and sophisticated algorithms. Compass Error Calculation 64 Celestial Objects. Precise bearing and altitude. Automatic calculation of magnetic variation. Complete calculation according to all requirements. Suitable for all types of ship logs. Hiding celestial objects below the horizon is available. Celestial Navigation Three position lines for calculating the ship's position. A function is available for mapping the lines of position and the calculated position of the vessel. The sunrise and sunset function is available as well as Twilight Nautical and Twilight Civil. E.T.A Calculation High precision Great user interface Vessel speed adjustment function Port UN LOCODE 18,000 seaports Brief information on the seaport Units Converter 15 Dimensions Volume Length Angle Mass Temperature Speed Duration Area Power Pressure Frequency Energy Electric Resistance El. Potential Difference Electric Current This app will save you a lot of time and allow you to steer your boat even more safely. If you have questions or suggestions, please email yvvofficial@yahoo.com or on the Instagram page conav_.
Screenshots
Verdict
The clearest difference is price: C at Free against CoNav's $6.99. C also leads on rating (4.5 vs 4.0) and ratings volume (2.3K vs 6). CoNav's advantage is in-app purchases (none vs 11) and review sentiment (83% vs 51%). On ads and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
C is free to download; CoNav costs $6.99 up front. C sells 10 in-app purchases, starting at $1.99 per month. CoNav asks for nothing beyond the download.
C holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: C has 2.3K ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 51% of C'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.
C ships an update every 6 weeks, CoNav every 3 weeks. Both last shipped on September 23, 2026.
| Parameter | C | CoNav |
|---|---|---|
| Price | Free — better | $6.99 |
| Rating | 4.5 (2.3K ratings) — better | 4.0 (6 ratings) |
| Positive reviews | 51.0% of reviews | 83.3% of reviews — better |
| Number of ratings | 2.3K — better | 6 |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Best chart rank | #90 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 169 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Navico Norway AS | Vladyslav Yarmak |
Customer experience
C
CoNav
Bugs and requests
C
Reported bugs
4 issues- App crashes when trying to save tracks or routes
- Offline maps fail to download or disappear
- Depth/contour data inaccurate or not displaying properly
- Login and authentication issues preventing access
Requested features
4 requests- Add mast height/clearance feature
- Improve AIS integration and functionality
- Allow more customization of map views and data
- Provide better customer support and communication
CoNav
Not enough reviews yet to summarise bugs or requests.
In-app purchases
C
- Embark Advanced Weather$1.991 Month
- Embark Offline Maps USA$2.491 Month
- Annual Subscription14 Days trial$14.991 Year
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- Annual subscription14 Days trial$14.991 Year
- Region14 Days trial2 variants$18.991 Year
- North America14 Days trial$23.491 Year
- Maps Lakes South East USA14 Days trial$25.991 Year
- Annual Subscription14 Days trial$29.991 Year
- Caribbean14 Days trial$32.991 Year
- Maps USA East Coast & Bahamas14 Days trial$39.991 Year
CoNav
No in-app purchases









