Polar Clock

1.10

Zsolt Nagy

4.73

434 reviews

50,000+
Downloads

Free

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

Download from Google Play

Pros & Cons

Accurate polar alignment guidance using Polaris angle and multiple time standards
Displays Polaris location and precise GPS coordinates
Virtual polar scope support for Orion/SkyWatcher mounts
Lightweight, easy-to-use interface with a small footprint

Location permissions are required to fetch GPS coordinates, which some users may want to avoid
Niche utility focused on polar alignment; may offer fewer features for general stargazing
Limited information outside alignment tooling (no broader telescope features)

About Polar Clock

Polar Clock is a tools app developed by Zsolt Nagy.

Download Statistics

Polar Clock has been downloaded 64 thousand times. In the last 30 days, the app was downloaded 710 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. It displays Polaris' hour angle, local, sidereal and UTC time and GPS coordinates. It provides additional help to Orion/SkyWatcher mount users by placing the Polaris in a virtual polar scope.

Recent changes:
Minor update for Android 13.

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More data about Polar Clock

Price	Free to download
Total downloads	64 thousand
Recent downloads	710
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

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Alternative downloads for the Polar Clock app

Polar Clock compared with similar apps

Common keywords of similar apps

Designed Mount Polar Clock Alignment Polaris

Keywords missing from this app

Time App World Widget Zones Zone Converter Sky Moon Screen Weather Recent Compass Device Https Fixes Added Hour Location Night Gps Support Home Global Tool Multiple Bug Speed Date Position Features North Planets Widgets Utc Coordinates View Accurate Magnetic Sensor Digital Sun Required Celestial Real Apps

Google Play Rating history and histogram

Rating history

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380

Downloads over time

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Polar Clock has been downloaded 64 thousand times. Over the past 30 days, it averaged 24 downloads per day.

Changelog of Polar Clock

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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

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Technologies used by Polar Clock

3 permissions · 22 libraries

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