Best Sextant Navigation Apps

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.

Circle Of Position Navigation

Sun Navigation

$8.99

This app provides a backup navigation system using the sun, similar to chart plotter satellite navigation. It requires manual sextant readings and allows users to input times and measurements to display their position on an electronic map, creating a journey track.

Sextant Emulator

by Timothy Smith

Free

Simulate using a sextant to measure latitude by sighting the sun and horizon. Includes tools for calculating declination, local solar noon, and basic surveying.

Sextant — Celestial Nav

Learn to navigate by the stars

$9.99

This app provides a comprehensive celestial navigation toolkit for sailors and enthusiasts. It allows users to navigate using celestial bodies like the sun, moon, planets, and stars, even when GPS is unavailable. The app guides users through taking sextant readings, performing calculations, and plotting positions on a map.

Sextant Calculator

by Will Downing

$1.00

This tool simplifies celestial navigation calculations for sailors and students. It handles angle and time arithmetic, averages multiple sights, and features a specialized keypad. Offers day and night modes for usability at sea.

Mark Time

by TrozWare

Free

This app helps celestial navigators accurately record UTC time for sextant sightings. It provides tactile and auditory feedback for precise time stamping, storing readings in five registers. Users can optionally photograph their sextant for later verification.

Navigation Almanac

Celestial navigation offline

Free

This app provides a comprehensive offline celestial navigation toolkit. It calculates celestial body positions, sunrise/set times, and sky charts. It also offers tools for compass error correction and position fixing, all without requiring an internet connection.

GPS Anti Spoof

sextant sight analyzer

$3.99

Instantly compare observed celestial navigation altitudes with live calculated values. This tool helps mariners detect GPS spoofing and functions as a celestial navigation trainer, offering instant feedback without paperwork.

Navigation Lights 3D

Captain's handbook

$1.99

Study maritime navigation lights and vessel identification according to COLREGs-72. Observe vessels from various angles to understand their position, capabilities, and activities in low visibility. Ideal for aspiring and current navigators.

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.

ANS Navigator

by ADVANCED IMPACTOR PRIVATE LIMITED

$29.99

This navigation app offers fast, reliable routing with live traffic data in select Indian cities. It provides features like automatic recalculation, multipoint routes, and local POI search. Navigate to contacts, GPS coordinates, or even pictures.

GPS Navigation & Live Earthmap

Route Planner & 3D Street View

Free

Navigate your daily commute or explore the globe with advanced mapping tools. Features include live satellite views, 3D street panoramas, AI-powered route planning, and real-time traffic updates. It also offers a parking reminder, speedometer, area calculator, and currency converter.