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Astrolabe Clock

Astrolabe Clock

by Michael Smith

48 ratings
55 reviews
🔧 Utilities
🔍 Reference
Free

Details

  • Released
  • Updated
  • March 1, 2011
  • May 18, 2026

Features

Developer

Michael Smith
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About

This app offers a modern interpretation of an ancient astronomical instrument, providing a real-time view of the sky. It displays the time of day, day of the year, and the positions of celestial bodies like the Sun, Moon, planets, and stars. Users can also track sunrise/sunset times, moon phases, and celestial transits.

✓Real-time sky view
✓Time of day and day of year display
✓Sun, Moon, planet, and star locations
✓Sunrise and sunset times
✓Moon phase tracking
✓Celestial transit times
✓Eclipse occurrence indicator
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What's New in Astrolabe Clock

2.0.3

May 18, 2026

New in v.2.0.3 : - Fixes a visual inconsistency in widget background so that it is now always black. What's new in v.2 : - Home Screen Widgets — Add a small or large Astrolabe Clock widget to your home screen! The large widget shows the full astrolabe experience; the small widget is perfect for Standby Mode. Both update automatically and respect your display settings. - Share — Tap the new share button to save or send a snapshot of the current astrolabe view, including all displayed data. - Interactive time adjustment now runs at 60 fps for fluid, responsive control. Drag to explore the sky at any time of day. - Modernized interface — Updated for current iOS devices, with improved layout and a cleaner settings panel.

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User reviews

Most RecentHighest RatedLowest Rated

Many uses

So many ways to use this: Should I put on sunscreen? Yes, if the sun’s altitude is above 20°. Which way is south? Use the sun’s azimuth as a compass. It’s easy to tell the times of sunrise or sunset. I prefer to configure it like a planisphere. (Projection direction south and normal east/west.) Selecting a star or planet in the sky shows me its name, coordinates and brightness, which is most often all I want to know.
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greg_cogreg_co

Great app

Simple, useful features, and responsive developer.
JJJJJJJJJJJJJJ

Beautiful app

Beautiful app but widget is not working?
JsixhishshhsJsixhishshhs

It’s amazing

This app is truly brilliant at what it does
Sir Chazzington the FlySir Chazzington the Fly

Really Neat Way to Look at the Sky!

This may not be brand new or flashy, but I really love the way this astrolabe visualizes the relationships between the celestial bodies as a function of time. If you actually read the instructions and play with the app you learn a lot about how things are related. Well done!
PeteNHPeteNH
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FAQ

What does the Astrolabe Clock app do?

The Astrolabe Clock app provides a modern, digital interpretation of the ancient astrolabe. It displays a real-time view of the sky, showing the time of day, day of the year, and the positions of the Sun, Moon, planets, and stars. It also offers information on sunrise and sunset times, moon phases, and celestial transits.

What are the key features of Astrolabe Clock?

Key features include a real-time sky view, display of time of day and day of year, tracking of celestial body locations (Sun, Moon, planets, stars), sunrise and sunset times, moon phase tracking, and transit times for celestial objects. It can also indicate the occurrence of solar and lunar eclipses.

Is Astrolabe Clock free to use?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, suggesting a completely free experience for users.

What kind of information can I get from Astrolabe Clock?

You can get a comprehensive overview of the sky's current state, including the exact time of day, the current day of the year, and the precise locations of the Sun, Moon, planets, and visible stars. It also provides practical astronomical data like sunrise and sunset times and the current phase of the Moon.

Who would benefit from using Astrolabe Clock?

This app is ideal for amateur astronomers, stargazers, or anyone with an interest in celestial mechanics and the history of astronomical instruments. It's also useful for those who want to quickly understand the position of celestial bodies at any given time or predict upcoming astronomical events.