Comparison

C vs Swellpro Fly

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

Swellpro Fly

Control your unmanned aerial vehicle with this utility application. It provides convenient manipulation of your drone's functions directly from your mobile device.

Highlights
  • Drone manipulation
  • Convenient control
  • Utility tool
  • Unmanned aerial vehicle management
Features
Read full description

This is a tool APP for our unmanned aerial vehicle product, you can manipulate the facility more conveniently with it.

Screenshots

C4 screens
Swellpro Fly2 screens

Verdict

The call

The clearest difference is review sentiment: C at 51% against Swellpro Fly's 0%. C also leads on rating (4.5 vs 3.0) and ratings volume (2.3K vs 2). Swellpro Fly's advantage is in-app purchases (none vs 11) and iOS requirement (8.0 vs 15.1). 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 10 in-app purchases, starting at $1.99 per month. Swellpro Fly asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

C holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: C has 2.3K ratings behind it against 2, 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 0% of Swellpro Fly's.

UpkeepUpdate frequency

C ships an update every 6 weeks, Swellpro Fly every 4 weeks. The most recent releases landed on September 26, 2026 and June 1, 2026 respectively.

Scorecard7 real differences · 4 level
C versus Swellpro Fly: the parameters behind the verdict, then further details
ParameterCSwellpro Fly
PriceFreeFree
Rating4.5 (2.3K ratings) — better3.0 (2 ratings)
Positive reviews51.0% of reviews — better0.0% of reviews
Number of ratings2.3K — better2
Update frequencyEvery 6 weeksEvery 4 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#107 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.18.0 — better
Further details — not scored
Size169 MB6 MB
Age rating4+4+
DeveloperNavico Norway ASShenzhen SwellPro Technology Co.,LTD

Customer experience

C

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

Swellpro Fly

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

Swellpro Fly

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

Swellpro Fly

No in-app purchases

Questions

Is C free?
C is free to download, with in-app purchases available.
Is Swellpro Fly free?
Swellpro Fly is free to download, with no in-app purchases.
Which has better reviews, C or Swellpro Fly?
C is rated higher. C averages 4.5 out of 5 from 2.3K ratings, while Swellpro Fly averages 3.0 from 2 ratings.
Do C or Swellpro Fly have ads?
Neither C nor Swellpro Fly shows ads.
Which is updated more often, C or Swellpro Fly?
C ships an update every 6 weeks, and Swellpro Fly every 4 weeks. Most recently, C was updated on September 26, 2026 and Swellpro Fly on June 1, 2026.

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