Best apps like Nautical Calculator Preview

8+ similar apps compared and reviewed

4.2 avg rating
7 free apps
Updated July 2026

Nautical Calculator Preview is great, but it's not the only option. Explore 8+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

ParcSync: Parking, EV & GPS

ParcSync: Parking, EV & GPS by parcsync

Shared Spots, Earn & Navigate
🗺️ Navigation
5.0(12 ratings)
FreeIn-App Purchases
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Top Alternatives to Nautical Calculator Preview

Celestial Navigator#1

Celestial Navigator by Omar reis

Editor's Choice
🗺️ Navigation
2.0(3 ratings)
Free
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This app assists with celestial navigation training by providing a perpetual almanac, star finder chart with animation, and tools for calculating lines of position and meridian passages. It can utilize device sensors for real-time chart positioning, though a marine sextant is still required for actual navigation.

Celestial Nav#2

Celestial Nav by SkyTip LLC

Modern Celestial Navigation
Strong Contender
🗺️ Navigation
4.4(8 ratings)
FreeIn-App Purchases
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This app provides tools for celestial navigation, offering computations for celestial bodies and sight reductions. It includes an offline perpetual almanac and allows for quick capture of observation data for accurate course adjustments.

CamSextant#3

CamSextant by Omar reis

Worth Considering
🗺️ Navigation
4.3(6 ratings)
Free
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This app functions as a celestial navigation tool, enabling users to take altitude measurements of celestial bodies using their phone. It provides real-time star and planet identification, automatic astronomical position calculations, and a perpetual nautical almanac.

More apps like Nautical Calculator Preview

4
SEAiq Pilot
SEAiq Pilot
SEAiq Pilot
#1 App for Pro Marine Pilots
Free

This navigation app provides advanced charting and real-time vessel data for professional marine pilots. It supports various chart formats and external NMEA/AIS devices, offering features like predicted vessel display and docking aids. A free trial is available, with an in-app purchase for permanent access.

S-57, S-63, iENC, BSB/KAP chart supportExternal NMEA/AIS over WiFiPredicted vessel display
🗺️ Navigation
(423)
free with in-app purchases
5
SEAiq
SEAiq
SEAiq
by Sakhalin
Free

This marine navigation app offers comprehensive charting capabilities, allowing users to load various standard chart formats and download NOAA charts. It includes essential navigation tools like waypoints, routes, and an anchor alarm, along with weather overlays and NMEA/AIS integration.

Load custom S-57, S-63, iENC, BSB, KAP chartsAutomatic NOAA chart downloadsWaypoints, routes, and tracks
🗺️ Navigation
(181)
free with in-app purchases
6
Mate4Mate
Mate4Mate
Mate4Mate
Navigate like a pro
Free

This navigation app provides tools for maritime professionals and sailing enthusiasts. It offers features like true wind calculation, celestial navigation, ETA estimation, logbook management, and port search. Stay informed with real-time NavArea warnings for safer voyages.

True Wind CalculationCelestial Navigation ToolsETA Estimation
🗺️ Navigation
(0)
free
7
Navigation Marine
Navigation Marine
Navigation Marine
Essential marine tools
Free

This marine navigation tool provides essential functions for sailors, yachts, and boats. It includes a speedometer, position tracking, waypoint management, distance measurement, and course guidance to waypoints.

Speedometer (knots, mph, km/h)Course Over GroundPosition tracking
🗺️ Navigation
(0)
ad-supported
8
EZ Celestial Navigation
EZ Celestial Navigation
EZ Celestial Navigation
ezAlmanacOne
$29.99

This app simplifies celestial navigation using a sextant, providing tools to calculate your position at sea. It offers automated calculations or manual table access, with features for observation archiving and compass checks. Ideal for learning and practicing traditional navigation methods.

Automated sight reduction and LOP plottingManual Nautical Almanac and Pub. 229 table accessObservation archiving and restoration
🗺️ Navigation
(19)
paid