Perpetual Nautical Almanac app icon

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.

by RPA TECHNOLOGIES SL★ 5.01 ratingsNavigation$6.99Data updated 2026-09-20

Perpetual Nautical Almanac screenshots

Ranked alternatives

Showing 241–260 of 1,000 ranked alternatives.

  1. Ahamove app icon

    Ahamove

    TUC THOI SERVICE CORPORATION

    ★ 3.7105 ratingsTravelFreeData updated 2026-09-09
  2. PFMA E6B app icon

    PFMA E6B

    Gonzalo Esteban Astica Capra

    Manage flight data and calculate fuel burn

    Navigation provides flight planning and in-flight calculations. Users can customize quick access buttons, configure units, and manage blocks and airtime.

    ★ 4.411 ratingsNavigation$6.99Data updated 2026-10-09
  1. i-Boating:HD Gps Marine Charts app icon

    i-Boating:HD Gps Marine Charts

    Bist LLC

    View and download and maps

    Access HD for USA, Canada, UK/Ireland, Germany, Netherlands, and European rivers. View NOAA vector , freshwater maps, and USACE inland river maps with bathymetry. Create or import GPX/KML routes. Use voice prompts for navigation.

    ★ 4.3103 ratingsSportsFreeData updated 2026-09-12
  2. Sun On Demand app icon

    Sun On Demand

    Spare Labs Inc.

    Book rides and track your driver

    Book door-to-door rides with same-day and up-to-seven-days-in-advance reservations. Pay fares through the . Access Sun Tran bus stops, Sun Link streetcar, and Ronstadt Transit Center via integrated navigation. Track ride details and manage bookings.

    ★ 4.722 ratingsTravelFreeData updated 2026-09-06
  3. Nautical Rules app icon

    Nautical Rules

    Joseph Kim

    Study navigation and practice exams

    Study Navigation with over 1,200 practice questions covering Inland and International waters. Topics include Steering & Sailing , Lights & Shapes, and Sound Signals. Each question has detailed explanations.

    ★ 5.04 ratingsNavigationFreeData updated 2026-09-06
  4. NICE Mini app icon

    NICE Mini

    Spare Labs Inc.

    Ride-share within zones and transfer to bus

    Book rides within designated zones in Nassau County. Pay fixed rates without surge pricing. Transfer to Bus or Long Island Railroad. Access ADA compliant vehicles. View ride details and track progress. Share ride info with others.

    ★ 4.522 ratingsTravelFreeData updated 2026-09-06
  5. aSmart HUD app icon

    aSmart HUD

    Vitalijs Lennojs

    Vehicle digital dashboard with many features.

    The app visualizes current speed, trip time, and weather forecasts. It includes a HUD mode for a reflected display on the windshield and offers music control and photo capture features.

    ★ 2.88 ratingsNavigation$0.99Data updated 2026-09-25
  6. Go Terrain app icon

    Go Terrain

    XPLORER

    Track routes, share positions, view targets

    Connect a metal detector via Bluetooth to view targets in real time. Save and view routes individually or in group mode. Track colleagues' positions and findings. Share and update data. Access GPS info and target details from compatible detectors.

    ★ 4.4105 ratingsNavigationFreeData updated 2026-09-15
  7. EMSA IMS Mobile app icon

    EMSA IMS Mobile

    AG�NCIA EUROPEIA DE SEGURAN�A MAR�TIMA.

    Track vessel positions and incidents

    Access vessel positions and details with advanced search and time slider features. Query by area, report incidents, and monitor oil spills. View electronic nautical charts with offline access. Receive local notifications and cluster alerts by color.

    ★ 5.03 ratingsUtilitiesFreeData updated 2026-09-10
  8. Sun Van app icon

    Sun Van

    Professional Transit Management of Tucson

    ★ 2.319 ratingsNavigationFreeData updated 2026-09-06
  9. Waterkaarten: Boat Navigation app icon

    Waterkaarten: Boat Navigation

    biggerworks bv

    Plan routes, track location, access maps

    Provides detailed nautical maps for boating. Plan routes with a route planner. Access AIS data for vessel tracking. Locate marinas, bridges, and locks. Use offline maps for areas without internet. View almanack information for weather and tide data.

    ★ 4.886 ratingsNavigationFreeData updated 2026-09-08

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.