Comparison

SeaNav NP vs navCenter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SeaNav NP

This app offers real-time maritime navigation with high-resolution digital charts and powerful route planning. It includes free navigation tools, offline chart support, and weather information. Advanced features like live AIS and augmented reality views are available via in-app purchases.

Highlights
  • Real-time navigation
  • High-resolution digital charts
  • Route planning and tracking
  • Offline chart support
  • Live AIS and AR views (IAP)
  • Weather, tide, and sun/moon times
  • Apple Watch app
Features
Read full description

Explore, Plan and Navigate in real time and outstanding high-resolution with the latest Digital Vector Marine charts and powerful route planning and navigation tools. Our free version includes all our navigation and trip planning tools. High resolution vector charts derived from official NOAA and UKHO ENC chart data (including US,CA,UK,IE,NL,BE,DE,FI,NZ) and live AIS and Augmented Reality views (AR) are available by In App Purchase (IAP). Each chart purchase provides free updates for a 12 month period. Free features:- - Instruments - Normal, satellite and hybrid view maps - Route Planning and real-time tracking - North up and course up displays - Charts work offline - Route export, import and sharing - Share routes via Dropbox - Built-in tutorial mode including demo charts. - NMEA GPS, AIS, Wind Speed and Direction gauges - Tide, moon and sun times - Weather including wave height and period - Apple Watch App - Favourite Places Additional features available via In App Purchases (auto-renewing subscriptions):- - Marine Vector charts - all buoys, lights etc. are tappable - Live AIS Ship positions - Live Augmented Reality camera view plus support for the FLIR ONE Infra-red camera. - Air Draft: Check your boat's clearance under bridges and cables - Real time local wind feed and 7 day forecast (IAP) Our unique AR view mode allows you to view buoys, lights, ships, waypoints and track overlaid on your iPhone or iPad live camera view. With "AR LockOn" you can select a target on the chart and then be guided to it in the AR camera view. See ships and MOBs at night and in the fog too with our world leading AR FLIR ONE camera support. The app’s HUD shows your position on route, Course (COG), Speed(SOG), Vector Made Good (VMG), Estimated Time of Arrival (ETA), Distance and bearing to next Waypoint. Waypoint reached alerts, auto-routing to the next waypoint and flashing AIS collision alerts. All our in-app purchases are 1 year subscriptions, which automatically renew at the end of the subscription period unless auto-renew is turned off at least 24-hours before the end of the current period. Payment will be charged to your iTunes Account at confirmation of purchase, and will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed by the iTunes account holder and auto-renewal may be turned off by going to Account Settings after purchase. 
No cancellation of the current subscription is allowed during active subscription period. Our privacy policy and terms and conditions may be viewed here:- Terms of Use: http://seanav.net/termsofuse.php Privacy Policy: http://seanav.net/privacy.php Support: help@pocketmariner.com Requirements: iPhone or iPad. GPS only required for real time route navigation. Optional Real time AIS, Tides and Weather information require an active internet connection. Real-time route navigation requires a GPS location. iPhone devices and iPads with a cellular modem already have a built-in GPS, even if they do not have an active service plan. If you have a WiFi-only iPad or iPod you will need an external GPS receiver to enable navigation. Inexpensive 3rd Party units are available to add these accurate location capabilities to your device via bluetooth. Please note that continued use of GPS running in the background can dramatically decrease battery life. Third Party Licenses and Notices NOTICE: US Marine Charts are derived from official NOAA Electronic Navigational Charts. “THIS PRODUCT IS NOT TO BE USED FOR NAVIGATION” The use of this product for the planning and execution of passages will not meet the requirements of SOLAS “NOTICE: Instituto Hidrográfico de la Marina (IHM) and the UK Hydrographic Office (UKHO) make no warranties or representations, express or implied, with respect to this product. The Instituto Hidrográfico de la Marina (IHM) and the UKHO have not verified the information within this product or quality assured it.”

About

navCenter

This app transforms your Apple devices into a multifunctional display for marine navigation data, including NMEA and AIS. It also provides autopilot remote control capabilities for compatible systems, connecting via a WiFi gateway.

Highlights
  • NMEA and AIS data display
  • Autopilot remote control
  • SeaTalk1™ and SeaTalkNG™ compatibility
  • WiFi gateway connection
  • NMEA2000 and NMEA0183 format support
  • Multifunctional display for iPhone, iPad, Mac, and Watch
Features
Read full description

navCenter (nC) enables your iPhone/iPad/Mac/Watch to operate as a multifunctional display (MFD) for NMEA data (including AIS) and as an autopilot remote control for SeaTalk1™ and SeaTalkNG™ autopilots. navCenter connects to your boats instruments via a WiFi gateway and can handle both NMEA2000 and NMEA0183 formats simultaneously. Information on WiFi gateways can be found here: https://www.guardiandigital.tech/navCenterGatewaysMultiplexers.html navCenter is able to control SeaTalkNG™ and SeaTalk1™ autopilots when partnered with a compatible WiFi multiplexer or Gateway. More information on the autopilot remote control can be found here: https://www.guardiandigital.tech/navCenterAutopilotRemote.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ privacy policy: https://www.guardiandigital.tech/html/privacyPolicy.html

Screenshots

SeaNav NP4 screens
navCenter4 screens

Verdict

The call

The clearest difference is price: navCenter at Free against SeaNav NP's $27.99. navCenter also leads on rating (4.4 vs 2.8) and update cadence (monthly vs every 7 months). SeaNav NP's advantage is iOS requirement (11.0 vs 15.4). On ratings volume, ads, in-app purchases and monetization model 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

navCenter is free to download; SeaNav NP costs $27.99 up front. SeaNav NP sells 10 in-app purchases, starting at $5.49 per year and navCenter sells 2 in-app purchases, starting at $14.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

navCenter holds the better App Store score, 4.4 against 2.8. Both are backed by a comparable volume of ratings — 4 and 7 respectively.

UpkeepUpdate frequency

SeaNav NP ships an update every 7 months, navCenter monthly. The most recent releases landed on September 29, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 6 level
SeaNav NP versus navCenter: the parameters behind the verdict, then further details
ParameterSeaNav NPnavCenter
Price$27.99Free — better
Rating2.8 (4 ratings)4.4 (7 ratings) — better
Positive reviews—77.8% of reviews
Number of ratings47 — better
Update frequencyEvery 7 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple WatchiPhone, iPad, iPod, Apple Watch
Requires iOS11.0 — better15.4
Further details — not scored
Size63 MB26 MB
Age rating4+4+
DeveloperPocket Mariner Ltd.GUARDIAN DIGITAL LTD

Customer experience

SeaNav NP

All ratings4 ratings
Positive25.0%
Neutral50.0%
Negative25.0%

navCenter

All ratings7 ratings
Positive71.4%
Neutral28.6%
Negative0.0%
Written reviews9 reviews
Positive77.8%
Neutral11.1%
Negative11.1%

In-app purchases

10 purchases

SeaNav NP

Subscriptions10
  • Wind and Waves$5.491 Year
  • Pro Features$14.491 Year
  • New Zealand Charts$16.991 Year
Show 7 more
  • Portuguese Charts$19.991 Year
  • US & Great Lakes$24.991 Year
  • Norwegian Charts1 Month trial$24.991 Year
  • UK & IE Charts$25.991 Year
  • Spanish Charts$26.991 Year
  • French Charts (N & W)$29.991 Year
  • Canadian Charts$30.991 Year
2 purchases

navCenter

Subscriptions1
  • Subscribed annually$14.991 Year
One-time1
  • Purchased$34.99

Questions

Is SeaNav NP free?
SeaNav NP costs $27.99, and also offers in-app purchases.
Is navCenter free?
navCenter is free to download, with in-app purchases available.
Which has better reviews, SeaNav NP or navCenter?
navCenter is rated higher. SeaNav NP averages 2.8 out of 5 from 4 ratings, while navCenter averages 4.4 from 7 ratings.
Do SeaNav NP or navCenter have ads?
Neither SeaNav NP nor navCenter shows ads.
Which is updated more often, SeaNav NP or navCenter?
SeaNav NP ships an update every 7 months, and navCenter monthly. Most recently, SeaNav NP was updated on September 29, 2026 and navCenter on October 5, 2026.

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