C vs Taider
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
Taider
Navigate the Masurian Lakes with detailed nautical charts. Discover depth, hazards, port information, and record your routes. Offers collision alerts and route planning tools for a safer and more enjoyable sailing experience.
- Detailed nautical charts of Masurian Lakes
- Depth, shallows, and underwater rock information
- Port layouts, prices, and moorage spots
- Collision alert system
- Route recording and replay
- Distance measurement and route planning
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The best nautical charts of masurian lakes in your phone. Depth, shallows, underwater rocks, port layouts and prices, moorage spots, colision alert, route record. Test for free. TAIDER is the best navigation application for Masurian sailors. The most accurate nautical charts on the market were created specifically to cover your needs. We have created innovative features to make sailing even more comfortable and safe. TAIDER is an irreplaceable application to find the right direction on the Masurian Lakes. What you get? + The best navigation charts of Masurian Lakes - TAIDER contains the best bathymetric charts, made on the basis of newest bathymetric surveys. Our charts cover all of the Great Masurian Lakes* and are very clear and intuitive in usage. Having them makes you able to sail even during the night or in the fog. On TAIDER charts you will find all necessary information like depth, ports layouts, jetty locations, moorage spots, silence zones, reeds, forests and buildings. + Unmarked hazards - TAIDER’s charts contains even that shallow places and stone reefs which have not been marked with buoys on the water. When sailing on Masurian Lakes, you don’t have to be limited by lateral marks. Feel safe and free to sail across all the Great Masurian Lakes. + Collision alert - TAIDER has an innovative warning system. You don’t have to frequently check your position on the map. TAIDER will warn you about nearby hazards by emitting a sound signal, and give you the time to correct your course. + Marinas information - Wonder which port fits your needs? TAIDER provides all information about available infrastructure, including port plans, mooring methods and prices. + Mooring spots - Masurian Lakes show their true beauty away from loud and crowded ports. TAIDER will show you all the best places for mooring at the shore. + Cruise info - TAIDER allows you to display and record your trail. After returning from a cruise, you can recall memories by replaying the route you have traveled on eg. using Google Earth. + Tools useful in cruise planning and navigation: route planning and distance measurement. *Bathymetric charts of lakes currently available in Taider app: Ryńskie, Tałty, Mikołajskie, Bełdany, Nidzkie, Roś, Tałtowisko, Jagodne, Boczne, Niegocin, Tajty, Kisajno, Dargin, Łabap, Dobskie, Mamry, Święcajty. More lakes soon.
Screenshots
Verdict
The clearest difference is monetization model: Taider at free against C's free with in-app purchases. Taider also leads on iOS requirement (11.4 vs 15.1). C's advantage is chart position (#105 vs unranked). On price, review sentiment, update cadence and ads 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
Both are free to download. C sells 10 in-app purchases, starting at $1.99 per month and Taider sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
C ships an update every 6 weeks, Taider every 2 months. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.
| Parameter | C | Taider |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2.3K ratings) — better | — |
| Positive reviews | 51.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 2.3K — better | — |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #105 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 11.4 — better |
| Further details — not scored | ||
| Size | 169 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Navico Norway AS | Navcart sp. z o.o. |
Customer experience
C
Taider
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
Taider
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
Taider
- Access for 365 days (promo)$0.99
- Access for 365 days (promo)$3.99
- Access for 365 days (promo)$7.99
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- Access for 7 days$9.99
- Access for 365 days (promo)$12.99
- Access for 365 days (promo)$14.99
- Access for 365 days (promo)$16.99
- Access for 14 days$17.99
- Access for 365 days (promo)$20.99
- Access for 365 days (promo)$24.99








