Best EZ Celestial Navigation alternatives: apps like EZ Celestial Navigation

10+ similar apps compared and reviewed

4.4 avg rating
6 free apps
Updated November 2026

EZ Celestial Navigation is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to EZ Celestial Navigation

4.9(8 ratings)
$49.99
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This app provides advanced celestial navigation computations for iPhone and iPod touch. It offers mathematical and graphic solutions for position fixes, great circle sailing, and more, including lunar distance methods and a sight planner for accurate results.

Celestial Nav#2

Celestial Nav by Skytip LLC

Modern Celestial Navigation
Strong Contender
🗺️ Navigation
4.3(10 ratings)
FreeIn-App Purchases
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This tool provides comprehensive celestial navigation calculations, including sight reductions and almanac data. It offers both basic free features for daytime sun navigation and advanced pro features for day and night use with a wide range of celestial bodies. The app is designed for offline functionality and ease of use.

GPS Anti Spoof Pro#3

GPS Anti Spoof Pro by Frank Reed

sextant sight analyzer
Worth Considering
🗺️ Navigation
5.0(7 ratings)
$19.99
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Instantly compare observed celestial navigation altitudes with calculated ones. This app helps mariners detect GPS spoofing and functions as a celestial navigation trainer. It automatically includes all necessary corrections for accurate readings.

More apps like EZ Celestial Navigation

4
Celestial Navigator
Celestial Navigator
Celestial Navigator
by Omar reis
Free

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.

Perpetual almanacAnimated star finder chartLine of position calculation
🗺️ Navigation
(5)
free
5
CamSextant
CamSextant
CamSextant
Sextant & Celestial Navigation
Free

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.

Celestial object altitude measurementReal-time star and planet identificationAutomatic astronomical position calculation
🗺️ Navigation
(7)
free
6
EZ Sextant
EZ Sextant
EZ Sextant
Navigate without GPS
$24.99

Navigate open waters using your phone's camera to sight celestial bodies. This app plots lines of position and combines them for an estimated location on a lat/lon grid. It's a powerful tool for offshore navigation without relying on GPS.

GPS-free navigationCamera-based celestial sightingsAutomatic position plotting
🗺️ Navigation
(4)
paid
7
Nautical Calculator Preview
Nautical Calculator Preview
Nautical Calculator Preview
Nautical Calculator Preview
Free

This app assists with critical marine navigation tasks, including real-time ship movement, route planning, and complex sailing calculations. It also provides tools for collision avoidance, maneuvering, and learning maritime regulations and signaling.

Real-Time Ship MovementRoute PlanningMercator & Great Circle Sailing
🗺️ Navigation
(1)
ad-supported
8
qtVlm
qtVlm
qtVlm
Navigation and weather routing
Free

This navigation software is designed for sailing boats, offering a free version with basic GRIB viewing and an optional full version with advanced weather routing, chart modules, and communication features. It supports various chart formats and NMEA data sources, with a simulation mode for learning.

GRIB viewer with advanced functionsWeather routing and route modulesSupport for Raster, Vector, and MBTiles charts
🗺️ Navigation
(9)
free with in-app purchases
9
Rule Master
Rule Master
Rule Master
Rules of the Road Toolbox
$9.99

Master maritime navigation rules with this comprehensive quiz app. It offers extensive question banks, custom filters, and detailed progress tracking for both new and experienced sailors. Generate custom exams and access a digital handbook for efficient learning and exam preparation.

10,000+ question-answer combinationsCustom question filtersFill-in-the-blank questions
🗺️ Navigation
(297)
free with in-app purchases
10
Cortex Onboard
Cortex Onboard
Cortex Onboard
Cortex on your mobile device
Free

Configure and update your marine electronics, and monitor vital boat data remotely. Receive alerts, view AIS information, and manage anchor watch from your mobile device.

Configure and update Cortex devicesView AIS information and alertsManage Anchor Watch remotely
🗺️ Navigation
(12)
free