Best Astronomical Clock Apps

249+ iOS apps curated and reviewed

4.4 avg rating
17 free apps
Updated October 2026

The best astronomical clock apps on iPhone average 4.4★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.

Compare top Astronomical Clock Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Astrolabe ClockAstrolabe ClockFree4.7★ (49)NoNoOct 2026
2Daimyo ClockDaimyo ClockFree4.5★ (2)NoNoOct 2026
3Sol Clock: Sun & Moon TrackerSol Clock: Sun & Moon TrackerFree—NoYesNov 2026
4Planetary Hours by PlanetaroPlanetary Hours by PlanetaroFree4.8★ (1.7K)NoYesNov 2026
5Solar System ClockSolar System ClockFree3.0★ (1)NoNoOct 2026
6Cosmic-WatchCosmic-WatchFree4.8★ (636)NoYesOct 2026
7Wadokei57 Astronomical clockWadokei57 Astronomical clock$3.99—NoNoJul 2026
8Polaris - Astronomical ClockPolaris - Astronomical ClockFree—NoNoOct 2026

Top Picks for Astronomical Clock

4.7😊(49 ratings)
Free
Astrolabe Clock screenshot 1
Astrolabe Clock screenshot 2
Astrolabe Clock screenshot 3
Astrolabe Clock screenshot 4
Astrolabe Clock screenshot 5

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.

What We Love

  • ✨ Beautiful and clean interface
  • 💡 Useful for learning astronomy
  • 🧭 Accurate sun and compass data
  • 🌟 Identifies stars and planets
  • 🆓 Free and functional
  • 🔭 Great for telescope users
  • ⏳ Easy to use time slider
  • 📱 Pocket-sized astronomy tool
  • 👍 Simple and effective
  • 🚀 Fast and responsive
  • 🌌 Visualizes celestial relationships
  • 💯 Comprehensive astronomical data

Room to Improve

  • 🐌 Slow performance on newer iOS
  • 🐛 Widget not working
  • 👁️ Red fonts hard on eyes
  • ⏳ Last updated years ago
  • 📉 Poor performance on latest iOS
Daimyo Clock#2

Daimyo Clock by Douglas Hildum

Traditional Japanese clock
Strong Contender
📚 Education
4.5(2 ratings)
Free
Daimyo Clock screenshot 1
Daimyo Clock screenshot 2

Experience traditional Japanese timekeeping with this app, which recreates a 17th-century mechanical clock. It accurately displays time divided into six equal periods for day and night, adjusting for seasonal changes in daylight.

More Astronomical Clock apps to explore

FAQ about Astronomical Clock

What are the best astronomical clock apps for iPhone?
Astrolabe Clock tops our astronomical clock apps ranking as of October 2026, with a 4.7-star average from 49 App Store ratings, and it's free to download.
Yes — 17 of the top astronomical clock apps we rank are free to download, including Astrolabe Clock and Daimyo Clock.
Astrolabe Clock has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 249+ astronomical clock apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.