Comparison

Seapilot vs C

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Seapilot

Navigate like a professional with this marine navigation app. It offers vectorized chart data, AIS, and weather forecasts, bringing merchant shipping technology to your mobile device. Plan trips, track your vessel, and access advanced navigation tools.

Highlights
  • Vectorized S-57 chart data
  • Automatic Identification System (AIS)
  • Built-in weather forecasts
  • Positioning and background positioning via GPS
  • Man Overboard function
  • Premium features like Weather Routing
Features
Read full description

Professional marine navigation used to require an expensive GPS plotter. Now, same technology used in merchant shipping is available for the iPad and iPhone.  Seapilot lets you navigate like a pro with vectorized S-57 chart data from National Maritime Administrations. This is the first navigation app to feature Automatic Identification System (AIS) and built in weather forecasts, when within a mobile network. Charts and features available as In-App Purchase. Use it to navigate, to plan tomorrow’s boat trip or reminisce about yesterday’s. (PS. Even works in your sofa at home.) Seapilot features: • Free trial period of included functionallity • Professional navigation based on merchant shipping standards for ECDIS (Electronic Chart Display and Information System) • S-57 chart data (In-App Purchase) and AIS data from National Maritime Administrations  • Developed by True Heading, leaders in marine navigation and communication at sea, with cutting-edge AIS and VHF know-how Functions: Δ Positioning and background positioning via GPS  (Continued use of GPS running in the background can dramatically decrease battery life) Δ Visualization of S-57 chart data from National Maritime Administrations  Δ Autonomous navigation - charts (In-App-purchase) downloaded to the device  Δ Option of tracking your own boat on the chart Δ Displays position, course and speed Δ Adjustable own speed and course vector  Δ Man Overboard function Δ Display settings for day, dawn/dusk and night Δ Past track Δ Plotting/marking objects Δ Electronic bearing and range marker from own vessel Δ True Motion and adjustable North Up / Head Up chart orientation Δ Chart object search Δ AIS target search Δ Setting of safety contour (2, 3, 6, 10 and 15 meters) Δ World chart for rough overview/orientation Δ Facebook integration; share position with friends or all users, list friends, show friends or all users on chart, post on was Premium: Δ Routes Δ Weather Routing Δ Weather Forecast, High quality 5-day Coastal Weather Forecasts. Δ AIS data from National Maritime Administrations via Internet (3G or WLAN)  Δ Course and speed vector for AIS targets Δ NMEA-0183 interface for connecting external GPS/AIS via WIFI Δ Import/Export to GPX-file == Auto-renewable subscriptions in Seapilot == • Seapilot Premium, Annual Subscription: $39.99 • Swedish Charts with automatic updates, Annual Subscription: $8.99 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 No cancellation of the current subscription is allowed during active subscription period Privacy Policy https://seapilot.com/privacy End User License Agreement https://seapilot.com/eula/ ==== Requirements: iOS 7.0 or later, iPad or iPhone with GPS. (External GPS unit can be used for other models.) Based on 140 years of experience, Seapilot has been developed by True Heading (www.trueheading.se/us) – experts at AIS, VHF, marine navigation and communication at sea.  • True Heading is a leader in AIS products with over 40 years of navigation experience. – An authority on professional navigation. Contact: Your input is essential in helping us further develop Seapilot. Feel free to contact us at info@seapilot.com. For the latest info, like Seapilot on www.facebook.com/seapilot.se

About

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.

Highlights
  • Free chart viewer
  • Autorouting
  • Personal waypoints
  • Track recording
  • Marine weather forecasts
  • Offline map downloads
  • High-resolution bathymetry
Features
Read full description

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

Screenshots

Seapilot2 screens
C4 screens

Verdict

The call

The clearest difference is rating: C at 4.5 against Seapilot's 2.9. C also leads on ratings volume (2.3K vs 15) and review sentiment (51% vs 38%). Seapilot's advantage is iOS requirement (9.3 vs 15.1). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Seapilot sells 18 in-app purchases, starting at $8.99 per year and C sells 10 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

C holds the better App Store score, 4.5 against 2.9. That said, the two scores are not equally well evidenced: C has 2.3K ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 38% of Seapilot's written reviews are positive against 51% of C's.

UpkeepUpdate frequency

Seapilot ships an update every 3 months, C every 6 weeks. The most recent releases landed on September 30, 2026 and October 13, 2026 respectively.

Scorecard6 real differences · 5 level
Seapilot versus C: the parameters behind the verdict, then further details
ParameterSeapilotC
PriceFreeFree
Rating2.9 (15 ratings)4.5 (2.3K ratings) — better
Positive reviews38.1% of reviews51.0% of reviews — better
Number of ratings152.3K — better
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank—#112 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.3 — better15.1
Further details — not scored
Size107 MB169 MB
Age rating4+4+
DeveloperSeapilotNavico Norway AS

Customer experience

Seapilot

All ratings15 ratings
Positive46.7%
Neutral6.7%
Negative46.7%
Written reviews21 reviews
Positive38.1%
Neutral9.5%
Negative52.4%

C

All ratings2,347 ratings
Positive89.3%
Neutral3.1%
Negative7.6%
Written reviews512 reviews
Positive51.0%
Neutral8.6%
Negative40.4%

Bugs and requests

Seapilot

Not enough reviews yet to summarise bugs or 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

In-app purchases

18 purchases

Seapilot

Subscriptions14
  • Swedish charts with automatic updates$8.991 Year
  • East Canadian charts$14.491 Year
  • West Canadian$14.491 Year
Show 11 more
  • Spanish charts with automatic updates$17.491 Year
  • Finnish charts$19.491 Year
  • Dutch charts$19.491 Year
  • Irish charts$19.491 Year
  • British charts$19.491 Year
  • German charts$23.491 Year
  • Croatian charts with automatic updates$26.491 Year
  • Portuguese charts with automatic updates$26.491 Year
  • Greek charts with automatic updates$34.991 Year
  • Premium$39.991 Year
  • French charts$50.991 Year
One-time4
  • US EastFree
  • US WestFree
  • US-Great Lakes. One year subscription.$11.99
Show 1 more
  • US-West. One year subscription.$13.99
10 purchases

C

Subscriptions10
  • Embark Advanced Weather$1.991 Month
  • Embark Offline Maps USA$2.491 Month
  • Annual Subscription14 Days trial$14.991 Year
Show 7 more
  • 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

Questions

Is Seapilot free?
Seapilot is free to download, with in-app purchases available.
Is C free?
C is free to download, with in-app purchases available.
Which has better reviews, Seapilot or C?
C is rated higher. Seapilot averages 2.9 out of 5 from 15 ratings, while C averages 4.5 from 2.3K ratings.
Do Seapilot or C have ads?
Neither Seapilot nor C shows ads.
Which is updated more often, Seapilot or C?
Seapilot ships an update every 3 months, and C every 6 weeks. Most recently, Seapilot was updated on September 30, 2026 and C on October 13, 2026.

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