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Application required to perform precise night polar alignment.
AppBrain's verdict
EstablishedLoved by users- Rating on Google Play
- 4.53
- 361 ratings
- Installs
- 18 thousand
- Last updated
- February 1, 2026
- Ads
- No ads
- Size
- 2.03 MB
PolarFinder Pro has 18 thousand installs. Users love it: 4.5 stars from 361 ratings.
Summary
PolarFinder Pro delivers precise night-polar alignment for astrophotography by combining manual coordinate entry, multiple reticles, and precession-aware position calculations for both hemispheres. It offers view inversion and field-friendly display options to simplify telescope setup in darkness, with notable regional recognition in Germany, the US, and France. The app has a solid footprint with 10,000+ total downloads and 160 downloads in the last 30 days across its market presence.
Pros & Cons
- Precise polar alignment using precession-aware calculations
- Supports both hemispheres for universal applicability
- Offers multiple reticles for different telescope brands
- Manual coordinate/date entry without GPS for field flexibility
- Lacks satellite/sky-tracking features emphasized by some competitors
- Requires visibility of the Polar star and polar scope to use effectively, which may limit applicability in some environments
User feedback
Ratings and reviews on Google PlayComments on PolarFinder Pro for Android
Google Play Rating history and histogram
Store listing
By Raffaele Lunari, from Google PlayDescription by Raffaele Lunari Written by the developer, not by AppBrain. Click to read.
In the settings you can choose to exclude the GPS and enter the customized coordinates and / or even a particular date and time in order to know the exact position of the Polaris (northern hemisphere) or Sigma Octantis (southern hemisphere) for a certain place.
This feature is also useful to know the peak of the polar for a specific place directly in the field without having to resort to third applications.
Once the position has been calculated, the polar image will be shown exactly as it should be set in the polar telescope, remembering that it inverts the images (the app also allows real vision).
ATTENTION: To use this app you need to see the Polar star and have a polar scope.
Main features of the app:
1. Possibility to manually enter coordinates,
date and time excluding
the gps;
2. Various reticles available:
- PolarFinder;
- Skywatcher (old and new);
- Ioptron;
- Bresser;
- Astro-Physics;
- Takahashi;
3. Works in both hemispheres;
4. Possibility of activating/deactivating the
view through the polar telescope (inverts
the images);
5. Possibility of activating/deactivating the "Full Screen" view;
6. Possibility of activating/deactivating the "Super Dark" view;
7. Position of the Polaris or of the Octant very
accurate thanks to the
calculation of the phenomenon of the
Precession;
8. Altimeter;
9. Very accurate help
PLEASE NOTE:
This app unlike most apps of its kind, takes into account the phenomenon of the Earth's Precession.
The Earth has a rather complex movement, one of them is called the Precession where the rotational axis of Earths slowly changes its orientation and the celestial poles are slowly changing with it. This movement is rather small, around 26,000 years per revolution, but in time it changes the apparent position of celestial objects. As the right-ascension coordinate is used when calculating the hour angle, it is important to consider the effects of precession on the RA coordinate.
For any problems, clarifications, suggestions or suggestions for improvement, write to me. I am at your complete disposal thanks and ...
Clear Skies!
Recent changes:
Edge‑to‑edge mode handling and support for Android 16
Safety and technology
Found in the app by AppBrain- Ads
- No ads
- Price
- $3.99
- Libraries
- 4
- App size
- 2.03 MB
- Needs Android
- 4.1+
- Content rating
- Everyone
Technologies used by PolarFinder Pro
Releases
Updates seen on Google Play- Version
- 2.5.5
- Launched
- September 2019
- Feb 1, 2026UpdateVersion 2.5.5
- Jan 10, 2026UpdateVersion 2.5.5
- Jul 28, 2025UpdateVersion 2.5.4
- Jul 5, 2025UpdateVersion 2.5.3
- Mar 23, 2024UpdateVersion 2.5.2
Alternatives
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Installs
Tracked by AppBrain- Last 30 days
- 160
- Play install range
- 10+ thousand
- Launched
- September 2019
Installs over time
PolarFinder Pro has been installed 18 thousand times. Over the past 30 days, it has been installed 160 times.
Rankings
Google Play top chartsGoogle Play Rankings for PolarFinder Pro
About the app and developer
About PolarFinder Pro
PolarFinder Pro is a tools app developed by Raffaele Lunari.
Install Statistics
PolarFinder Pro has been installed 18 thousand times. In the last 30 days, the app was installed 160 times.
User Ratings
PolarFinder Pro is rated 4.53 out of 5 stars. The rating is based on 360 ratings.
App Information
PolarFinder Pro costs $3.99. The app size is 2.03 MB. The latest version available is 2.5.5. The last update was on February 1, 2026.
Technical Requirements
PolarFinder Pro requires Android 4.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since September 2019.
PolarFinder Pro is made and published by Raffaele Lunari. AppBrain is an independent app data site and isn't affiliated with Raffaele Lunari. The app name, icon, screenshots and description belong to Raffaele Lunari and are shown as published on Google Play.
App Performance Report
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