📡 This time the alien isn’t running off: there’s a situation to fix.

Our android set off with its telescope still out of collimation: the AstroStackerPro Android beta has just arrived on Google Play, but right now it’s still far behind the iOS version, which is much further along in development.

And that’s exactly where you come in. 🛸🔭 Send us photos, logs, feedback and anything that seems useful to the development and improvement of AstroStackerPro.

Public beta

Join the AstroStackerPro beta

AstroStackerPro is in public beta on TestFlight. Your feedback helps us improve stability, usability and overall quality before the final version.

Join the beta See the FAQ

Requires an iPhone with iOS 26 or later. It installs through Apple’s TestFlight app.

The beta is open: tap “Join the beta”, install Apple’s TestFlight app if you don’t have it yet, and follow the instructions. For any questions, write to [email protected].

AstroStackerPro · Beta

Public beta distributed via TestFlight. Updates are published during the beta phase.

Version · Public beta Build · To be defined

Founding Testers

What you get, what we ask

The first testers shape how the app grows. We don’t ask for reviews or posts: we ask you to try it and tell us where it gets stuck.

What you get

The app free for the whole beta, with updates as they come out. The developer reads every report and replies. If you like, your name in the thanks of the release notes.

What we ask

One session, even a short one, and three lines in reply to the first mission. Everything else is optional: the more you tell us, the better.

What you need

An iPhone with iOS 26 or later, or an Android phone with a Google account. For the night, a tripod or a steady surface and a clear sky. For the first mission, not even that.

The first mission

You can start in daylight

If you already have night-sky shots taken with the phone held still, even with the regular camera: open them in the AstroStackerPro Editor (up to 50 at a time on iPhone) and stack them.
If you don’t, open the planner: it tells you what is worth photographing tonight from where you are, the Moon times and an estimated Bortle class for your sky.
Then send us three lines at [email protected]: did you get a stack? How long did it take? What got in your way?

The night mission: the Moon with the Moon preset, or the Starry sky preset with the phone on a tripod. No need to note the capture data: AstroStackerPro writes it into the file.

See what comes out: the photos made with the app

What we’re looking for

Where to focus your feedback

You don’t need to write a perfect report: even a short note helps. These are the areas where your perspective matters most.

Bugs and crashes

Report any unexpected behavior, freeze or crash, even if it seems rare.

Interface

Unclear labels, confusing gestures, contrast, accessibility: let us know what doesn’t work.

Camera responsiveness

Latency, missed captures, slow previews: please include iPhone model and lighting conditions.

Presets

Which presets work for you? Which parameters would you expect? Which targets are missing?

Export and saving

Test the JPEG and 16-bit TIFF formats. Tell us about any saving issues.

User experience

General suggestions on the flow, on how long a capture takes, on what would make the app simpler.

How to send feedback

Three ways to reach us

Direct email

Write to [email protected] with the subject Beta Feedback AstroStackerPro.

Add context

When possible attach screenshots or screen recordings, iPhone model, iOS version and TestFlight build.

From inside TestFlight

You can send feedback directly from Apple’s TestFlight app, including annotated screenshots.