Features & Capabilities

This app does all the calculations to reduce a sextant reading to a line of position on the map. All intermediate numbers are shown to check your manual calculations.

• Perpetual nautical almanac • Calculation of the line of position (azimuth and distance) • Draws the line of position on the map. • Star Finder: just point your device to the sky to identify the navigational stars. • Save your readings, choose what to show on the map.

A sextant is required to make full use of this app.

User Growth & Download Statistics

App
By:
Dr. Harald Merkel
Version:
1.4 Last updated: 2020-08-20
Version code:
837442509
Creation date:
2019-04-03
Compatible devices:
Size:
51.15MB
Price:
1.99
URLs:
Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-13
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
Dr. Harald Merkel
Apple Apps Store
https://apps.apple.com/lk/app/celestial-navigation/id1458513224

User Reviews

I use this for sextant practice, plugging in my readings and comparing them to my known location to improve my sighting technique. Quick, easy, and accurate. It hasn’t been updated in 5 years, which is troubling, but it is still working on iOS 26.3.
by Ma*****, 2026-02-27

This app is really good. Everything you need, full service. Not hard to learn. Wish list: option for latitude longitude and time in decimal seconds. Verbose position output and confidence value.
by La*****, 2025-06-26

From height this calculates a positive dip. I think that dip is always a subtraction from read on the sextant.
by Ak*****, 2024-11-22
View all user reviews ›

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