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Last updated on: 2026-07-12
Android Apps > Tools > Polar Clock
Polar Clock icon

Polar Clock

1.10
Zsolt Nagy
4.73
428 reviews
50,000+
Downloads
Free

A small clock tool designed to help in the alignment of your telescope.

Not recently updated — last update was on 2024-05-11. This app may no longer be actively maintained.
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Pros & Cons

  • Niche, focused polar-alignment tool for telescope mounts
  • Combines multiple time systems (local, sidereal, UTC) and Polaris hour angle in one view
  • GPS coordinates and a virtual polar scope aid precise alignment
  • Lightweight, easy to use on Android devices
  • Lacks broader features commonly found in competitor tools (e.g., weather, compass widgets, or generic time widgets)
  • Not ranked in top app lists, indicating a smaller, niche audience
  • Limited feature scope beyond polar alignment

About Polar Clock

Polar Clock is a tools app developed by Zsolt Nagy.

Download Statistics

Polar Clock has been downloaded 63 thousand times. In the last 30 days, the app was downloaded 400 times.

User Ratings

Polar Clock is rated 4.73 out of 5 stars. The rating is based on 430 ratings.

App Information

Polar Clock is FREE to download. The APK download size is 5.10 MB. The latest version available is 1.10. The last update was on May 11, 2024.

Technical Requirements

Polar Clock requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play December 2019.

Description
Polar Clock is a lightweight, easy-to-use app, designed to help with the setup and polar alignment of an equatorial mount.
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More data about Polar Clock

Price Free to download
Total downloads 63 thousand
Recent downloads 400
Rating 4.73 based on 430 ratings
Ranking Not ranked
Version 1.10
APK size 5.10 MB
Number of libraries 22
Designed for Android 5.0+
Suitable for Everyone
Ads NO ads

App Performance Report

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Alternative downloads for the Polar Clock app

PolarAligner Pro (Astro Tool) icon PolarAligner Pro (Astro Tool)
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PolarFinder Pro icon PolarFinder Pro
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Daytime Polar Alignment icon Daytime Polar Alignment
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SkEye | Astronomy icon SkEye | Astronomy
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Polaris : A Cool Compass icon Polaris : A Cool Compass
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Astro Clock Widget icon Astro Clock Widget
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UTC Clock icon UTC Clock
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World Clock Widget & Weather icon World Clock Widget & Weather
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Polar Clock compared with similar apps

Common keywords of similar apps

Designed Mount Polar Clock Alignment Polaris

Keywords missing from this app

Time Satellite Dish App Finder Widget Compass World Zones Location Gps View Free Screen Moon Weather Converter Pointer Align Device Zone Tool Recent Angle Tracker Accurate Map Azimuth Fixes Tv Https Position Direction Current Sensor Feature Features Hour Support Home Network Added Director Speed Application North

Google Play Rating history and histogram

Downloads over time

Polar Clock has been downloaded 63 thousand times. Over the past 30 days, it averaged 13 downloads per day.

Changelog of Polar Clock

Show changelog

Developer information for Zsolt Nagy

Zsolt Nagy

zsoltc@gmail.com

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Comments on Polar Clock for Android

★★★★★ Andrew Barnett · Sep 9, 2021
Great app. The polar clock shows exactly the same image and scale as my new Sky watcher polar alignment scope. GPS and sidereal time are accurate. Makes polar alignment simple.
★★★★★ Rich Stevenson · Jun 2, 2022
I see others commented about rotating the reticle. I see the setting for how precise this happens, but I can't figure out how to rotate it? Update: Just figured it out. Good use 2 fingers and rotate. Perfect!
★★★★★ Grant Martin · Sep 18, 2021
Nice tool with a no frills display of the basic time, location, and polaris references for astronomy.
★☆☆☆☆ Michael Howard · Apr 28, 2023
Does not work. Cross-hair on scope does not move. Tried to set hemisphere manually, also used static position but still no response. I'm located in Southern Hemisphere (Sydney).
★★☆☆☆ D W · Jun 29, 2022
The display on this app appears to be in error. Polaris is located approximately between Cassiopeia and the Big Dipper. The Celestial pole is also. And Polaris is shifted away from the Celestial pole by about .7 degrees. However, Polaris is shifted towards Cassiopeia - not towards the Big Dipper - which is the way this app displays it.
★★☆☆☆ Matt Stone · Apr 23, 2025
The app seems promising but the reticle never moves for me so function is limited to none. Running on a Samsung Galaxy S25 Ultra in the Northern Hemisphere. Other similar apps seem to work without issue.

Google Play Rankings for Polar Clock

This app is not ranked

Technologies used by Polar Clock

Polar Clock is requesting 3 permissions and is using 22 libraries.
Show details
Top new apps Popular Tools Apps Apps on sale Today's trending apps Apps other people are watching
PolarAligner Pro (Astro Tool) icon PolarAligner Pro (Astro Tool)
PolarFinder Pro icon PolarFinder Pro
Daytime Polar Alignment icon Daytime Polar Alignment
SkEye | Astronomy icon SkEye | Astronomy
Polaris : A Cool Compass icon Polaris : A Cool Compass
Astro Clock Widget icon Astro Clock Widget
UTC Clock icon UTC Clock
World Clock Widget & Weather icon World Clock Widget & Weather

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