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AstroClock

Name: AstroClock
Author: Holger Schoening

Holger Schoening

Astronomically correct 24-hour clock: the Sun is the hand, the star sky turns

System & tools
FOSS
Free
No ads
No tracking

Android only

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What are these stores? F-Droid, GitHub, Zapstore

AstroClock is an astronomically correct 24-hour clock. Instead of an ordinary dial, it shows the sky exactly as it currently stands above your location: the Sun travels around the dial once per day as the hour hand, and the entire starry sky turns along with it – just as it really does overhead. Features:

Developer: Holger Schoening
Source code: github.com/GorArania/AstroClockApp
Added to AppCosmos: 9 October 2026
License: GPL-3.0-or-later