ISS Detector Pro

3.18K reviews
Content rating
Everyone
100K+
Downloads
Free with a Play Pass subscription Learn more
Content rating
Everyone
Digital Purchases
Learn more
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About this app

Have you seen the International Space Station? You can actually see it in the night sky.
See the Starlink satellite train with the Famous Objects (included in the Filter menu).

If you like space or astronomy, you will like this ISS tracker app.

ISS Detector Pro includes the functionality of ISS Detector (free) with all the Extensions and no ads.

You can see more in the night sky:
Radio Amateur Satellites
Track dozens of ham and weather satellites. Includes transmitter frequencies and Doppler shift calculations.

Famous Objects
Track Hubble, X-37B, Fitsat, Tiangong, Rocket bodies and more. Most are visible.

Comets and Planets
Track comets as they come closer to earth and become bright enough to see.

ISS Detector Pro will tell you when and where to look for the International Space Station or Iridium flares. You get an alarm a few minutes before a pass. You will never miss a pass of the International Space Station and you will never miss the bright flashes of the iridium communication satellites. ISS Detector will also check if the weather conditions are right. A clear sky is perfect for spotting.

• Overview of the coming passes
• Weather conditions for perfect sightings
• Notifications and Alarms
• Share sightings on social media.


ISS Detector combines data from Nasa, Heavens-above.com, minorplanetcenter.net and weather from yr.no.
See the International Space Station, planets, comets and more.
Updated on
Sep 3, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location and App info and performance
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • Data can’t be deleted

Ratings and reviews

2.8K reviews
A Google user
July 15, 2019
This app has been critical to me in the process of learning to use satellites for amateur radio. Not just the ISS! Absolutely worth the "pro" version purchase, and then some! One feature I'd like to see added: filter based on max elevation for an approach. I live between 2 hills. Frequent passes of 5 about degrees aren't viable for me. So for example, I'd like to be able to filter for passes greater than 25 degrees elevation. Great app!! Thanks!
110 people found this review helpful
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Christopher Carlson
October 2, 2023
The greatest, most data rich, easy to use sky watching app I use daily. To learn and see how much is going on just above our heads and we don't need a telescope to see what's going on is just a revalation and opens up the rest of what's up there. It's too bad it seems that a competitor or someone has a bone to pick as I see so many inaccurate reviews perhaps because they are too lazy to learn to use it, if so then they probably won't take the time to walk outside and look into the sky.
30 people found this review helpful
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Max Hall
September 3, 2026
first off, I love this app. Used the free version with all the add ons for years, daily, and I figured I would support the creator a bit more and buy the pro version since I use it so much. However, even though I went out of my way to pay for "no ads", the author has put a banner ad for another of their apps (which I also already have) on object tracking windows. This is a 5 star app that I'd recommend to everyone, and have for years, but until that banner ad is gone I have to rate low.
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RunaR
September 5, 2026
My apologies for the inconvenience. The ad only appears one time per day. Use the x icon in the top right 3 times. After that the ad will never appear again.

What’s new

Fix for missing daytime and nighttime ISS passes.