Comparison

C vs Shore Watch

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

Head to head
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

About

Shore Watch

Read full description

Nobody on shore knows where your boat is right now. You tell someone you'll be back around five. Then the wind picks up, or the motor doesn't, and five turns into seven — and the one person who could do something about it has no idea anything is wrong. Shore Watch closes that gap. HOW IT WORKS Start a trip and put your phone away. Your Safety Circle — your wife, a friend, whoever you choose — watches your boat move in real time on a map. Screen locked, app closed, phone in a dry bag: tracking keeps running. If something goes wrong, hit SOS. Everyone in your circle gets a text, an email, and a push notification with your exact coordinates and a live tracking link. WHAT YOU GET - Live position sharing during an active trip - One-tap SOS with coordinates sent to your whole circle - Background tracking that survives a locked screen - Departure and arrival alerts so shore knows when you left and when you're back - Automatic check-in prompts if you stop moving - Signal-loss alerts if your phone drops off the network - Trip history with route, speed, and duration - Two-way messages between captain and watchers during an emergency BUILT FOR REAL BOATING This was built by a boater in South Florida, tested off Black Point Marina, and broken on purpose until it stopped breaking. The hard part was never the map — it was making the boring parts hold when your phone is in a pocket six hours into a run. Shore Watch is not a replacement for a VHF radio, an EPIRB, or filing a float plan. It's the layer between "I'll text you when I'm back" and calling the Coast Guard. LOCATION AND PRIVACY Shore Watch uses your location only during a trip you start, and shares it only with the people you add to your Safety Circle. Background location is required so tracking continues when your screen is off — that's the entire point. End the trip and sharing stops. Free while in early access.

Screenshots

C4 screens
Shore Watch4 screens

Verdict

The call

The clearest difference is in-app purchases: Shore Watch at none against C's 11. Shore Watch also leads on update cadence (every 2 days vs every 6 weeks). C's advantage is chart position (#104 vs unranked). On price, ads, device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. C sells 10 in-app purchases, starting at $1.99 per month. Shore Watch asks for nothing beyond the download.

UpkeepUpdate frequency

C ships an update every 6 weeks, Shore Watch every 2 days. Both last shipped on October 15, 2026.

Scorecard3 real differences · 8 level
C versus Shore Watch: the parameters behind the verdict, then further details
ParameterCShore Watch
PriceFreeFree
Rating4.5 (2.3K ratings) — better—
Positive reviews51.0% of reviews—
Number of ratings2.3K — better—
Update frequencyEvery 6 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#104 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size169 MB47 MB
Age rating4+4+
DeveloperNavico Norway ASBoat Video Productions LLC

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

Shore Watch

Not enough reviews yet to summarise bugs or requests.

In-app purchases

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
None

Shore Watch

No in-app purchases

Questions

Is C free?
C is free to download, with in-app purchases available.
Is Shore Watch free?
Shore Watch is free to download, with no in-app purchases.
Do C or Shore Watch have ads?
Neither C nor Shore Watch shows ads.
Which is updated more often, C or Shore Watch?
C ships an update every 6 weeks, and Shore Watch every 2 days. Most recently, C was updated on October 15, 2026 and Shore Watch on October 15, 2026.

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