C vs NaAVIC
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
NaAVIC
This free marine navigation app simplifies boating for recreational users. It offers chart support, route planning, and offline capabilities to explore new locations safely and reliably. Connect with other boaters and share your voyages.
- Electronic chart support (IHO S-57/S-52)
- Route creation and navigation
- Offline navigation capability
- Boat position, speed, and course display
- Notifications and alarms
- Recreational hotspot finder
- Distance measurement
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NaAVIC is a free Electronic Chart System in your pocket that will make marine navigation easy, safe, reliable, and fun. This free app is for recreational boaters who want to navigate the surrounding waters safely while exploring new and interesting locations to fish, dive, eat etc. The app offers a range of features to make marine navigation easier and reliable that are delivered through a clear and intuitive interface designed specifically for mobile devices and tablets. By utilizing a cloud-based approach with data streaming, the NaAVIC ECS enables all members of an expedition to more actively engage in the voyage as well as to share that voyage with fellow ‘marine friends’, hence building a community of like-minded users. Features: - Supports IHO S-57 charts and S-52 presentation - Comprehensive route creation and navigation - Offline navigation - Displays boat position, speed, and course - Notifications and alarms - Find recreational hotspots - Measure distances - Stream additional data layers over the base map - Point of Interest Quick Start Guide: https://naavic.net/NaAVICQuickStarGuide.pdf
Screenshots
Verdict
The clearest difference is rating: NaAVIC at 5.0 against C's 4.5. NaAVIC also leads on in-app purchases (none vs 11) and iOS requirement (12.0 vs 15.1). C's advantage is ratings volume (2.3K vs 1) and update cadence (every 6 weeks vs every 6 months). On price, ads and device support 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
Both are free to download. C sells 10 in-app purchases, starting at $1.99 per month. NaAVIC asks for nothing beyond the download.
NaAVIC holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: C has 2.3K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 51% of C's written reviews are positive against 33% of NaAVIC'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, NaAVIC every 6 months. The most recent releases landed on October 17, 2026 and October 1, 2026 respectively.
| Parameter | C | NaAVIC |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2.3K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 51.0% of reviews — better | 33.3% of reviews |
| Number of ratings | 2.3K — better | 1 |
| Update frequency | Every 6 weeks — better | Every 6 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #112 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 169 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Navico Norway AS | IIC |
Customer experience
C
NaAVIC
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
NaAVIC
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
NaAVIC
No in-app purchases









