C vs Nauplios Logbook
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
Read full descriptionHide 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
Nauplios Logbook
Read full descriptionHide full description
Nauplios Logbook: The Professional Skipper's Digital Log Leave the wet paper behind. Nauplios Logbook is an offline-first digital logbook engineered for the real conditions of charter sailing and yacht ownership. Built entirely on Apple's native technologies, it automates the paperwork so you can keep your eyes on the horizon. 15-SECOND LOGGING AT THE HELM The Skipper's Dashboard gives you one-tap logging. GPS coordinates, Speed Over Ground, Course Over Ground, and barometric pressure are captured automatically from your device's sensors. Smart Carry-Forward pre-fills accumulative metrics like engine hours, fuel, and water levels from your last entry. Wind entry features a visual compass dial with a built-in Beaufort Scale guide using color-coded force indicators for instant recognition under stress. AI-POWERED ENGINE SCANNING Point your camera at the engine panel and let on-device OCR read the gauges for you. Engine hours, fuel level, and RPM are extracted automatically using Apple's Vision framework — 100% offline, no images ever leave your device. CHARTER HANDOVER INSPECTIONS Professional pre- and post-charter vessel inspection reports with 25+ categorized items across hull, engine, safety, deck, and navigation. Each item includes an inspection guide, a 4-status picker (OK, Damaged, Missing, N/A), and photo documentation for damage evidence. Lock and finalize reports, then export as professional PDF for the charter base. OFFLINE FLEET INTELLIGENCE A built-in database of 40+ popular charter yachts from Bali, Bavaria, Beneteau, Dufour, Jeanneau, Lagoon, and more. Select your vessel model and auto-populate all specs including tank capacities. Smart resource level inputs let you toggle between percentage and liters for fuel and water. SMART CONTEXT REMINDERS Shore excursion detection uses your iPhone's motion coprocessor to suppress sailing reminders when you're walking ashore. Once back on the water, Nauplios monitors your speed in the background and reminds you to log your position. A maritime watch planner aligns daily reminders with your watch schedule. PROFESSIONAL EXPORT Generate multi-page PDF reports with a cover page, landscape data table, and photo appendix. Export RFC-compliant CSV for spreadsheets or GPX 1.1 tracks for Navionics, OpenCPN, Garmin, and Google Earth. Handover inspection PDFs document vessel condition with photos and categorized findings. SMART CHECKLISTS Template-based packing lists and crew briefing checklists with 70+ maritime-grade default items. Each voyage gets an independent copy. Share via WhatsApp, iMessage, or email with one tap. FLEET MANAGEMENT & SYNC Save all your charter vessels with specs, photos, and tank capacities. Invisible iCloud sync keeps your iPhone on deck and iPad at the chart table perfectly in harmony. Tactical maps with optional OpenSeaMap nautical chart overlays show buoys, depth contours, and fairways. PRIVACY FIRST No accounts, no subscriptions, no ads, no third-party servers. Your data stays in your private iCloud container. Every feature works fully offline.
Screenshots
Verdict
The clearest difference is in-app purchases: Nauplios Logbook at none against C's 11. C's advantage is chart position (#95 vs unranked) and iOS requirement (15.1 vs 26.2). 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
Both are free to download. C sells 10 in-app purchases, starting at $1.99 per month. Nauplios Logbook asks for nothing beyond the download.
C ships an update every 6 weeks, Nauplios Logbook monthly. The most recent releases landed on October 26, 2026 and October 7, 2026 respectively.
| Parameter | C | Nauplios Logbook |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2.4K ratings) — better | — |
| Positive reviews | 51.0% of reviews | — |
| Number of ratings | 2.4K — better | — |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #95 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 26.2 |
| Further details — not scored | ||
| Size | 169 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Navico Norway AS | Manfred Wagner |
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
Nauplios Logbook
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
Show 7 moreShow fewer
- 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
Nauplios Logbook
No in-app purchases








