Apps Like Perpetual Nautical Almanac for iPhone and iPad
Calculate celestial positions in real-time
Calculate precise celestial positions using real-time data from 1900 to 2050. Input date and time to instantly recalculate GHA and declination for the Sun and Aries.
Perpetual Nautical Almanac screenshots
Ranked alternatives
Showing 1–20 of 1,000 ranked alternatives.
Luminos Map: Twilight Nav Tool
Mapnitude Company Limited
Sun Moon Twilight Navigation Tool
The app provides real-time Sun and Moon data, including sunrise, sunset, moonrise, and moonset times globally. It features a time-chart and interactive map for accessing celestial data and exploring seasonal shifts.
GPS Anti Spoof Pro
Frank Reed
Compare celestial altitudes and track live data
Compare observed celestial altitudes with live calculated values for precise navigation. Tap to pause and receive instant feedback. Access data for the Sun, Moon, Venus, Mars, Jupiter, Saturn, 57 navigational stars, and Polaris.
Tide Charts
7th Gear
Track tides, weather, and radar data
View tidal estimates, lunar data, and weather forecasts. Check current radar for real-time conditions. Select stations via map or favorites. Track changes over time with historical data. Share forecasts with others.
Tide Graph
Brainware LLC
Track tides and sunrise sunset
View tides and lunar events with interactive graphs showing predictions, sunrise, sunset, moonrise, moonset, and moon phase. Save locations, access GPS-based searches, and store graphs for future reference.
Sunrise - Moon Phase
AVIA AB
View phases and track sunset times
View phases for any date between 1900 and 2100. Check and sunset times for the current day and next six days. Display timezone based on device location. Swipe or select a date to view astronomical data.
StarPilot
Starpath Corp
State-of-the-art ocean navigation computations.
The app provides navigation computations for celestial bodies using an internal almanac. It offers solutions for position fixes, sailings, and piloting, including lunar distance and a graphical Sight Planner.
iStellar
AstroArts Inc.
Explore stars, zoom, and navigate the sky
View the night sky from any location and time. Rotate and zoom the star chart using multi-touch gestures. Identify over 16,000 stars with names for 254. Simulate atmospheric distortion and twinkling effects.
WX Aviation Weather
Imre Virag
Track and decode reports
Access real-time data including METAR, TAF, and NOTAM reports for 50,000+ airports. View satellite maps and decoded information. Filter nearby airports by runway length and METAR/VFR availability. Save favorites and organize into groups.
World Tides 2026
Brainware LLC
Track , moon events, and maps offline
View tide predictions for 8000+ global locations. Access monthly Extremes Charts and yearly Tide Calendar. Track Moonrise, Moonset, Sunrise, and Sunset times. Use offline maps for navigation. Sync with Apple Watch for real-time updates.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.