PolarAligner Pro (Astro Tool) has 22 thousand installs. Users are divided: 3.3 stars from 244 ratings.
PolarAligner Pro (Astro Tool) is made and published by
Kechkoindustries.
AppBrain is an independent app data site and isn't affiliated with Kechkoindustries.
The app name, icon, screenshots and description belong to Kechkoindustries and are shown as
published on Google Play.
About PolarAligner Pro (Astro Tool)
“The Polar-Aligner is a great tool to align your equatorial telescope mount”
PolarAligner Pro (Astro Tool) provides spirit-level leveling, north alignment with compass, and GPS-powered Polaris tracking for equatorial telescope mounts. It also includes drift-alignment calculations and offline true-north declination, making it a comprehensive toolkit for both hemispheres. The app shows steady regional presence in TOOLS markets and carries a 3.375 rating from 241 reviews, with total downloads of 10,000+ and 190 in the last 30 days.
Pros & Cons
Offline declination calculation for True North
GPS-based Polaris positioning and Hour Angle
Drift-Alignment calculator improves mount accuracy
Broad scope-brand support for popular polar scopes
Device sensor dependence: compass and tilt quality affect performance
Scope coverage may not include every brand—user requests welcomed
Requires location and storage permissions that may raise privacy expectations
PolarAligner Pro (Astro Tool) is a tools app developed by Kechkoindustries.
Install Statistics
PolarAligner Pro (Astro Tool) has been installed 22 thousand times. In the last 30 days, the app was installed 190 times.
User Ratings
PolarAligner Pro (Astro Tool) is rated 3.33 out of 5 stars. The rating is based on 240 ratings.
App Information
PolarAligner Pro (Astro Tool) costs $3.99. The app size is 8.30 MB. The latest version available is 8.6. The last update was on April 19, 2026.
Technical Requirements
PolarAligner Pro (Astro Tool) requires Android 2.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since May 2017.
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Comments on PolarAligner Pro (Astro Tool) for Android
★★★★★Alex McLean· Feb 8, 2021
A good app for me. I have to set up my mount every time I use it. I have no polar scope, but the daytime alignment is extremely well-thought-out. Once I set up my mount, I just put smartphone in my homemade holder and center the crosshairs. On a good sky I recheck it, and it is impressed with its accuracy. One niggle was I only found the instructions by accident, a link would be good.
★★★★★Gerald S· May 30, 2026
Have an older C8 with an out of date polar alignment finder scope. Even though the illuminated circles in the finder are no longer accurate for this time period I can still estimate the close enough to keep the scope tracking for viewing. Will need a more accurate finder for photography, but then I would just end up with Elon streaks across the image
★★★★★Peter Zalabai· Mar 17, 2021
Using it to align the mount to the North, and it's amazingly accurate on a Huawei P20 Pro. The GUI is really basic but that's okay as what it does is more important. I use it together with a polar scope but sometimes when I can't use the scope only this app gives very good results. I got fairly low amount of trailing with only the app on a 400 mm lens. The key thing is let it stand a while to get more accurate GPS alignment and keep your phone away from metal surfaces.
★★★★★neil holt· Apr 11, 2020
Great tool it does everything in one app the day time polar alignment is about a deg out. But that's still really good if you set up daytime when night falls and polaris is visible in the sky It's always in polar scope so just a minor adjustment needed I use the daytime polar align to place my tripod north leg I find it better than the compass The more I use it the better I find it Great job guys
★★☆☆☆Geoff C· May 2, 2019
Not as easy as expected. I was hoping to complete polar alignment during the day. It correctly assigns correct lat/long. I know my mount isn't that far off correct, just needed a bit more adjustment. The daytime align window provides a red circle and large white cross. The cross is almost off the top of the phone window, how am I supposed to center in the circle. To do so would give a weird parking position. Edit. As I bought this on the premise it could offer a help in daytime alignment, 2 *.
★☆☆☆☆Jim Buckman· Dec 27, 2021
I am using this app on a Samsung Galaxy S20 Ultra. The S20 has a built-in compass that is very accurate. I also have a Garmin GPS digital compass that points to exactly the same north that the compass built into my phone does. This app's compass is at least 15° off and is obviously not accessing the built-in compass on my phone. How about either fixing your app and add in all the neat stuff found in the iPhone version. Very, very disappointed.
Google Play Rankings for PolarAligner Pro (Astro Tool)
This app is not ranked
Technologies used by PolarAligner Pro (Astro Tool)
6 permissions·18 libraries
Subscribe to see full permission and library details
Trust & Safety: The app requests location (coarse and fine), Internet, and Read External Storage to provide GPS data, online features, and local data storage. Users should be aware that some features rely on device hardware sensors (compass/tilt), which may affect performance on devices without those sensors.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
