Overview

Rating:
4.70
(48)
Version:
2.0.3
Last updated: 2026-05-18
Ranking
#175,471 ▼ 51
Overall

Features & Capabilities

Astrolabe Clock is an astronomical clock inspired by the astrolabe, an ancient astronomical instrument used to tell time and to predict the location of the Sun, stars and planets. This modern interpretation gives a view of the sky showing at a glance the time of day, day of year, and the location in the sky of the Sun, Moon, planets and stars. Astrolabe Clock also gives the time of sunrise and sunset, the phase of the Moon, transit times for the Sun, Moon, planets and stars, and can be used to show the occurrence of solar and lunar eclipses.

User Growth & Download Statistics

App
By:
TwoNineEight Software
Rating:
4.70
(48)
Version:
2.0.3 Last updated: 2026-05-18
Version code:
885784979
Creation date:
2011-03-01
Compatible devices:
Size:
3.21MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-08-07
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:
TwoNineEight Software
Apple Apps Store
https://apps.apple.com/us/app/astrolabe-clock/id421777015
Website:
http://www.TwoNineEightSoftware.com

User Reviews

Astrolabe Clock is praised as a free, lightweight tool with accurate solar/lunar visuals and a user-friendly drag‑time interface, making it a valuable educational gateway and quick reference. However, it faces significant performance and compatibility issues on current iOS, a lack of updates, and missing features like alarms, which temper enthusiasm for some users.
Pros
  • Free to use with a clean, intuitive UI.
  • Accurate visualization of solar and lunar positions and elevations.
  • Educational and a great gateway to astronomy and geometry.
  • Simple, efficient, quick to learn and use for quick looks.
  • Drag-the-time feature to view the sky at any date/time (past or future).
Cons
  • Extremely poor performance on latest iOS; hasn’t been updated in over 4 years.
  • Laggy responsiveness on recent iOS versions (e.g., zooming and tapping planets).
  • Date and time settings don’t stay current and often revert to old values.
  • Lack of alarm/notification features; missing a requested capability.
  • Compatibility and update concerns on newer iOS versions and App Store availability.
Recent reviews
Simple, useful features, and responsive developer.
by JJ*****, 2026-05-01

This app is truly brilliant at what it does
by Si*****, 2026-04-24
View all user reviews ›

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