Polar Clock

Name: Polar Clock
Rating: 4.7411766 (448 reviews)
Author: Zsolt Nagy

By: Zsolt Nagy

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

Features & Capabilities

Polar Clock is a lightweight Chrome extension designed for amateur astronomers and telescope users. It assists in the precise polar alignment of equatorial mounts by displaying critical information such as Polaris' hour angle, local time, sidereal time, UTC time, and GPS coordinates.

The extension is especially helpful for users of Orion and SkyWatcher mounts by visualizing Polaris in a virtual polar scope, simplifying the setup process for accurate celestial tracking. Its easy-to-use interface makes it an essential tool for accurate telescope alignment and improved stargazing experiences.

User Growth & Download Statistics

App

By:

Downloads:

Rating:

Version:

1.10 Last updated: 2024-05-11

Version code:

Creation date:

2019-12-11

Publisher country:

Permissions:

android.permission.ACCESS_FINE_LOCATION Very high risk
android.permission.INTERNET Low risk
android.permission.ACCESS_NETWORK_STATE Safe

Size:

5.10MB

Email:

zs*****@gmail.com

URLs:

Full description:

Source:

Google Play Store

Data ingested on:

2026-07-04

Compare stats and ranking:

Ranking

# 263,778 ▼ 618

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:

Zsolt Nagy

Google Play Store

https://play.google.com/store/apps/details?id=com.astrotools.polarclock

Email:

zs*****@gmail.com

User Reviews

Pros

Free and ad-free app that is functional and uncluttered.
Accurate for polar alignment and easy to use.
Clean interface with straightforward guidance.
Ability to rotate the reticle for better alignment.
GPS and sidereal time are accurate.

Cons

Some users experienced issues with the app not working correctly or displaying errors.
The polar scope view's orientation can be problematic for some users depending on their equipment.
Minor display bugs reported, such as the app staying fullscreen intermittently.

Recent reviews

Thanks for creating this very useful app which works exactly as expected and is provided ad free for free! For those who need a utility to quickly and accurately polar-align your portable tracking mount (e.g. iOptron Skyguider Pro), you need not look any further.

Da*****, 2024-10-21

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).