Comparison

C vs Sign & Glide

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

Sign & Glide

This app provides 24/7 on-water towing and assistance for registered vessels for a flat annual fee. Enjoy unlimited towing coverage without hidden membership costs or extra charges.

Highlights
  • 24/7 emergency dispatch
  • Unlimited on-water towing
  • Flat annual fee
  • No membership fees
  • Affordable towing services
Features
Read full description

Sign & Glide is your answer to affordable on-water towing services. For one flat, annual fee, you will receive 24-hour emergency dispatch services and unlimited on-water towing coverage for your registered vessel. Towing assistance is available any time you need it, and there's no membership fees or unnecessary extras like other tow programs.

Screenshots

C4 screens
Sign & Glide4 screens

Verdict

The call

The clearest difference is in-app purchases: Sign & Glide at none against C's 10. Sign & Glide also leads on rating (5.0 vs 4.5). C's advantage is ratings volume (2.4K vs 1) and chart position (#129 vs unranked). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. C sells 9 in-app purchases, starting at $1.99 per month. Sign & Glide asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sign & Glide holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: C has 2.4K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

C ships an update every 6 weeks, Sign & Glide every 2 months. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 6 level
C versus Sign & Glide: the parameters behind the verdict, then further details
ParameterCSign & Glide
PriceFreeFree
Rating4.5 (2.4K ratings)5.0 (1 ratings) — better
Positive reviews51.0% of reviews—
Number of ratings2.4K — better1
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#129 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size169 MB33 MB
Age rating4+4+
DeveloperNavico Norway ASCompass Marine Services Inc

Customer experience

C

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

Sign & Glide

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

Sign & Glide

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

C

Subscriptions9
  • Embark Advanced Weather$1.991 Month
  • Embark Offline Maps USA$2.491 Month
  • Annual Subscription14 Days trial$14.991 Year
Show 6 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
  • Caribbean14 Days trial$32.991 Year
  • Maps USA East Coast & Bahamas14 Days trial$39.991 Year
None

Sign & Glide

No in-app purchases

Questions

Is C free?
C is free to download, with in-app purchases available.
Is Sign & Glide free?
Sign & Glide is free to download, with no in-app purchases.
Which has better reviews, C or Sign & Glide?
Sign & Glide is rated higher. C averages 4.5 out of 5 from 2.4K ratings, while Sign & Glide averages 5.0 from 1 ratings.
Do C or Sign & Glide have ads?
Neither C nor Sign & Glide shows ads.
Which is updated more often, C or Sign & Glide?
C ships an update every 6 weeks, and Sign & Glide every 2 months. Most recently, C was updated on November 6, 2026 and Sign & Glide on November 5, 2026.

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