C vs One
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
One
Integrate your boat's electronics into a single control center. Manage navigation, trolling motors, and shallow water anchors from your smartphone. Access detailed maps and update device software seamlessly.
- Integrated boat electronics dashboard
- Digital remote control for trolling motors and anchors
- Waypoint management and transfer
- Customizable lake and coastal maps
- Software updates for boat devices
- Access to product manuals and tutorials
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MAKE YOUR SMARTPHONE THE BRAINS OF YOUR BOAT The One-Boat Network® App brings your Humminbird® and Minn Kota® devices together into one dashboard to give you unprecedented command of your fishing boat. Navigate with Humminbird LakeMaster lake maps and coastal maps and then dial in with the app’s digital remotes for new Minn Kota or Minn Kota QUEST trolling motors and Talon or Raptor shallow water anchors. WAYPOINT MANAGEMENT Upping your fishing game is easier than ever. Effortlessly manage, customize, and transfer waypoints to plan your attack before heading out on the water. MAPS TO THE MAX Plan your attack. The included free LakeMaster VX Basemap lets you customize your view and set waypoints to chart your course. UNLOCK ADVANCED MAPS (SUBSCRIPTION FEATURE) Get the lay of virtually any lake or coastline: enjoy 13,000+ highly detailed LakeMaster freshwater lake maps for North America and CoastMaster saltwater maps for the East, West and Gulf Coasts. Includes shaded relief maps and aerial photos. HUMMINBIRD FISH FINDER CONTENT CAPTURING & SHARING TOOL Enables fast and simple sharing of everything your Humminbird imaging reveals under the water. Easily save and transfer screenshots from your XPLORE™, APEX™ or SOLIX® G3 fish finder to your phone via the One Boat Network app. Save and transfer screen video recording from your Humminbird XPLORE fish finder. PUT YOUR BOAT IN THE PERFECT POSITION The One-Boat Network App’s digital remotes allow you to tap into your trolling motor’s navigation modes and control your shallow water anchor from anywhere on your boat. Get instant access to either while you’re navigating in the app’s map view. MAKE YOUR MOTOR MOVE Take your new Minn Kota or Minn Kota QUEST motor for a ride, right from the touchscreen. Control your speed, steering and enhanced GPS navigation modes like Spot-Lock®, Advanced AutoPilot® and the all-new Drift Mode. DROP ANCHOR AT THE DROP OF A HAT Stop, drop and reel. Deploy, retract and adjust your Raptor or Talon shallow water anchor in a heartbeat. PEAK PERFORMANCE AT THE PUSH OF A BUTTON Stay at the top of your game with seamless updates for all your One-Boat Network devices. Use the app to download the latest software for Humminbird fish finders, new Minn Kota or Minn Kota QUEST trolling motors and your Raptor or Talon shallow water anchors. SELF-HELP, CENTRALIZED Dive deep into our knowledge base in just a few taps. Access product manuals, tutorial videos and FAQs through the Self-Help section. CALL FOR REINFORCEMENTS Raising the white flag? Request a callback from Minn Kota or Humminbird product experts in a couple of clicks.
Screenshots
Verdict
The clearest difference is rating: C at 4.5 against One's 2.8. C also leads on review sentiment (51% vs 18%) and ratings volume (2.3K vs 176). On price, update cadence, ads and in-app purchases 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 and One sells 1 in-app purchase, starting at $24.99 per year. Whichever you choose, the download price is not the number that matters.
C holds the better App Store score, 4.5 against 2.8. That said, the two scores are not equally well evidenced: C has 2.3K ratings behind it against 176, so its average is the more settled of the two. Written reviews point the same way: 51% of C's written reviews are positive against 18% of One's.
Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.
| Parameter | C | One |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2.3K ratings) — better | 2.8 (176 ratings) |
| Positive reviews | 51.0% of reviews — better | 18.1% of reviews |
| Number of ratings | 2.3K — better | 176 |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #101 | #54 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 169 MB | 121 MB |
| Age rating | 4+ | 4+ |
| Developer | Navico Norway AS | Johnson Outdoors Inc. |
Customer experience
C
One
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
One
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
One
- Fishing Maps of USA and Canada1 Month trial$24.991 Year






