C vs Lake Champlain
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
Lake Champlain
This app provides advanced marine raster nautical charts for various water activities. It offers seamless chart overlays, offline map display, and GPS tracking for easy navigation. Users can also add favorite markers and find points of interest.
- Advanced marine raster nautical charts
- Seamless chart overlays
- Offline chart display
- GPS tracking
- Unlimited favorite markers
- Distance measurement
- Points of interest search
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THE ALL NEW ADVANCED MARINE RASTER NAUTICAL CHARTS APP FOR BOATERS, ANGLERS, KAYAKERS, CANOERS, FISHERMEN, WATER NAVIGATORS AND SAILORS! IPHONE, IPHONE X & IPAD PRO COMPATIBLE! NO WAITING TIME FOR NAUTICAL CHART DOWNLOADS. IT'S READY TO USE! COMBINATION OF SMALL CRAFT AND HARBOR CHARTS FOR EASY NAVIGATION. ALL CHARTS OVERLAY IS ARRANGED IN A SEAMLESS ORDER, BASED ON CHART SCALE AND PRIORITY. NO NEED TO CHANGE CHARTS MANUALLY, THEY ARE READY FOR CONTINUOUS NAVIGATION. CHART FEATURES: ALL MARINE RASTER NAUTICAL CHARTS ARE FROM NOAA SOURCES. ALL CHARTS ALIGNED WITH ORIGINAL CHART CO-ORDINATES, ARE ACCURATE FOR USE. NEW MAPS FOR OFFLINE CHART OVERLAY DISPLAY, USE THEM AS LONG AS YOU BOAT. HIDE / SHOW ALL CHART BOUNDARIES. CHART BOUNDARIES FOR EACH INSET OR SUB CHARTS ARE VISIBLE. CHART TRANSPARENCY ADJUSTMENT TO COMPARE WITH ARIEL AND STREET MAPS. FAVORITE MARKER: INSERT UNLIMITED FAVORITE MARKERS ON MAP. PHOTO TAGGED FACILITY FOR MARKERS WITH EMAIL OPTION. ADD MULTIPLE PHOTOS TO FAVORITE MARKERS (MAX 3 ALLOWED). EMAIL FAVORITE MARKERS AS KMZ FILE. UPDATED FEATURES: TRACK YOUR LOCATION WITH GPS ON MAP. MEASURE LIVE DISTANCE ON CHART OVERLAY. LONG-PRESS ON MAP TO KNOW THAT POINT CO-ODINATE & CLOSE. MAP DIRECTIONS: FIND REAL-TIME DRIVING DIRECTIONS (LAND BASE ONLY). GET DISTANCE, TIME DURATION & STEP BY STEP DRIVING INSTRUCTIONS. DIRECTION INFORMATION BUTTON WILL APPEAR UNDER DIRECTION BUTTON ONCE ROUTE IS SHOWN ON MAP. CLICK IT FOR DETAILS. INDIVIDUAL ROUTE STEP IS VISIBLE IN DIFFERENT COLOR WHEN DIRECTION STEP DETAILS ARE CLICKED. THIS FEATURE WORKS ON NETWORK CONNECTIVITY. MAP SEARCH: SEARCH NEARBY POINT OF INTERESTS OF YOUR REQUIREMENT. USER EXACT KEYWORDS FOR FAST RESULTS. ONLY TOP RESULTS ARE SHOWN BASED ON AVAILABILITY. THIS FEATURE WORKS ON NETWORK CONNECTIVITY. SETTINGS: HIDE / SHOW CHART BOUNDS. HIDE / SHOW CHART DISPLAY (TRANSPARENCY ONLY). MANAGE MAP DISTANCE & DIRECTION UNITS. MAP TYPE DISPLAY UPDATION. HIDE / SHOW MARKERS WHENEVER REQUIRED. RUN-TIME SETTING CHANGES WILL NOT APPLY INSTANTLY FOR DIRECTIONS AND MAP DISTANCE MEASUREMENT. THIS APP IS MOST ADVANCED WITH ALL THE NECESSARY TOOLS FOR EASY NAVIGATION ON WATER. CONTINUOUS CHARTS DISPLAY MAKES IT MORE EASIER FOR SAILING AND AS THERE WILL BE NO INTERNET WHILE SAILING, THE OFFLINE CHART MODE IS FASTER FOR NAVIGATION. NOTE 1: All charts are Geo-positioned to match the exact location of features displayed on charts but there may be some difference between the positions of actual objects that are in the water or sea and charts because of the different chart scales. Disclaimer: The offline Raster Nautical Charts data provided in all charts is from NOAA and is for reference purposes only and not for navigation. We are experts in GIS & IOS Apps development and strive to provide the best products to the customers. Any suggestions from the users of this product are welcome to make the app more useful. HAPPY BOATING AND SAILING VOYAGES ALL THE TIME!
Screenshots
Verdict
The clearest difference is review sentiment: C at 51% against Lake Champlain's 0%. C also leads on price (Free vs $2.99) and update cadence (every 6 weeks vs every 26 months). Lake Champlain's advantage is in-app purchases (none vs 11) and iOS requirement (9.0 vs 15.1). On ads, chart position 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
C is free to download; Lake Champlain costs $2.99 up front. C sells 10 in-app purchases, starting at $1.99 per month. Lake Champlain asks for nothing beyond the download.
C ships an update every 6 weeks, Lake Champlain every 26 months. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.
| Parameter | C | Lake Champlain |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.5 (2.3K ratings) — better | — |
| Positive reviews | 51.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 2.3K — better | — |
| Update frequency | Every 6 weeks — better | Every 26 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Best chart rank | #101 — better | #154 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 9.0 — better |
| Further details — not scored | ||
| Size | 169 MB | 120 MB |
| Age rating | 4+ | 4+ |
| Developer | Navico Norway AS | Vishwam B |
Customer experience
C
Lake Champlain
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
Lake Champlain
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
Lake Champlain
No in-app purchases







