Sight reduction Live

Name: Sight reduction
Rating: 3.67 (122 reviews)
Author: Navigational Algorithms

Navigational Algorithms8 apps · 348.7K installsMaps & NavigationFreecom.Sightreduction

Celestial navigation. Take the sextant and get your Line of Position.

Alert me ★ Watch Open in Play ↗

Total installs: 32,483
Installs / day: —
Rating: 3.7★
Released: 21 Jul 2014
Last update: 25 Apr 2025
Countries: —

Install history

exact counter from Google Play

30dAll

Installs per day · last 90 days

Change timeline

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Permissions

5 in 2 groups

2 Sensitive0 Notable3 Routine

What this app can do with your phone

Know roughly where you are, using mobile towers and Wi-Fi networks
Know your exact location using GPS, Wi-Fi and mobile networks

LocationSensitive2

Access to where your device is, using GPS or network signals

Know roughly where you are, using mobile towers and Wi-Fi networksapproximate location (network-based) · ACCESS_COARSE_LOCATION
Know your exact location using GPS, Wi-Fi and mobile networksprecise location (GPS and network-based) · ACCESS_FINE_LOCATION

OtherRoutine3

Access to miscellaneous device features that don't fit other categories

Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
Connect to the internet to load content and send datafull network access · INTERNET
Read Google service settings stored on your deviceread Google service configuration · com.google.android.providers.gsf.permission.READ_GSERVICES

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Full description

Celestial navigation - Astronavigation Sight reduction: - Marcq Saint Hilaire Line of Position, intercept method (p=Ho-Hc, Zn) - Input for observed altitude Ho or instrumental Hs (Nautical Almanac data needed for the Sun and the Moon) - Calculator for Intercept method (p=Ho-Hc, Zn) altitude Hc and azimuth Zn - Running fix - Plots up to 3 Marcq Saint Hilaire Lines of Position on Google maps - Local hour angle (LHA) - List of navigational stars - Logbook (output is copied to clipboard) - New optimized user interface - GNSS fix to check the solution Sight reduction is the process of deriving from a sight the information needed for establishing a line of position. This app is a calculator to get the intercept from the assumed position of the observer AP(latitude, longitude), the geographical position of the celestial body observed, GP(Dec, GHA), and its corrected altitude Ho. Manual and examples in the developer's website. Ref: https://en.wikipedia.org/wiki/Sight_reduction User interface: - Zoom buttons +/- - Map types: standard, terrain, and satellite - GPS location. ("Location" App permission must be allowed. Switch on you GPS, and then automatic location detection is possible)

What's new

Upgraded to: Android 16 - SDK 36 new Google Maps 'com.google.android.gms:play-services-maps:19.2.0'

Growing in Maps & Navigation

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