Astro Stacker: Star Images

Astro Stacker: Star Images

Stack Images, Reveal Stars

4 ratings
9 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • October 7, 2025
  • September 5, 2026

Features

Astro Stacker: Star Images screenshot #1 for iPhone
Astro Stacker: Star Images screenshot #2 for iPhone
Astro Stacker: Star Images screenshot #3 for iPhone
Astro Stacker: Star Images screenshot #4 for iPhone
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About

Transform your smartphone into a powerful astrophotography tool. This app uses advanced algorithms to combine multiple night sky photos, reducing noise and revealing hidden celestial details for professional-quality results.

Advanced stacking algorithms (Average, Median, Maximum, Minimum)
Intelligent and manual image alignment
Real-time processing and progress tracking
On-device processing, no cloud upload
Export high-resolution stacked images
Detailed processing insights and logs
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What's New in Astro Stacker

2.0.6

September 5, 2026

This update focuses on stacking reliability: • Significantly improved RAW photo processing (CR2, CR3, NEF, ARW, DNG, RAF) so faint stars are detected more accurately • Stacking now automatically retries at a more sensitive setting instead of failing outright when few stars are found • If a stack gets interrupted, AstroStacker can now resume instead of starting over from scratch • Added a clear warning before backgrounding the app during a stack, since doing so will cancel it • New heads-up when importing photos that may not have enough star data to stack, such as screenshots or heavily compressed images • Various stability and bug fixes

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Subscription plans

AstroStacker app

a multi-platform astrophotography stacking application

$12.991 Month
How to cancel Astro Stacker subscription ⁉️
1

In-App Purchases

$219.00

AstroStacker app

a multi-platform astrophotography stacking application

User reviews

Doesn’t work at all

I try to put an image and it says not enough stars found, so I put a image with more stars and it says not enough stars found, also there is no configuration setting like it says on the crash screen

Would be great if it worked

This app has the potential to be the best for astrophotography and image stacking if it actually stacked your images without crashing. There are a multitude of settings and adjustments that you could make that you wouldn’t find anywhere else and it’s layout is great but anytime I attempt to stack any number of images (even two on the lowest settings), every time it gets to 65% it automatically crashes. I’m not willing to jeopardize any money on upgrading my free subscription to find out if it works then I doubt it. Make it work and it’d be well worth the money though.
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Response from developer

hi thanks for your feedback, we had some issues with that version and have since upgraded it please check it out would love to offer you some more credits to really test all the settings!

nope

App makes it so you sorta have to pick a paid option to do anything. tapping ‘free’ when a paid/free choice pops up does not work. I paid the seven bucks. It isnt worth the seven bucks I paid for it. Now I have to wait for it to show up on my itunes account or whatever to request a refund. It isnt siril. It isnt pixinsight. It couldnt produce results with known good input. skip it. would have rated it one start except nobody takes a one start serious.
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Response from developer

hi, sorrya bout the experience you had since then we were able to make the free tier more flexible with more options available, hope you can give it another go

?

Please help I tried a lot and all the app does is crash. If this is fixed then that would be amazing, since I REALLY want a mobile stacking app.
PLEASE fix this!!

ooh ooh ahh ahh

all these are the same person reviewing I balance it

Developer apps

FAQ

What is Astro Stacker used for?

Astro Stacker is used to combine multiple photos of the night sky to reduce noise and enhance details, producing professional-quality astrophotographs directly on your smartphone.

Does Astro Stacker have ads?

No, Astro Stacker is ad-free. The app is completely free to use and does not contain any advertisements.

What are the different stacking methods in Astro Stacker?

Astro Stacker offers Average Stacking to reduce noise, Median Stacking to remove trails, Maximum Stacking for bright details, and Minimum Stacking to eliminate artifacts.

Can I align images manually in Astro Stacker?

Yes, Astro Stacker provides manual alignment options for precise control, in addition to its intelligent feature detection and Center of Mass alignment.

Does Astro Stacker require an internet connection?

No, Astro Stacker works entirely on-device and offers complete offline functionality. Your photos are never uploaded to the cloud for processing.

What devices is Astro Stacker compatible with?

Astro Stacker is compatible with iPhone and iPad devices.

What is the age rating for Astro Stacker?

Astro Stacker has an age rating of 4+, making it suitable for a wide range of users.

How often is Astro Stacker updated?

Astro Stacker was last updated on October 7, 2025, with version 1.0. Future updates will likely continue to improve its features and performance.