Sputnik! is an easy to use tool for predicting when the International Space Station will pass by your location or when a bright satellite will be visible in the skies above.

Sputnik! features:

- Predictions of satellite and ISS sightings accurate to the second.
- Second by second countdown to the satellite sighting.
- Automatically keeps track of the correct universal time. No need to worry about whether your device clock is accurately set.
- Notification of upcoming satellite sightings even when the app is not running.
- Displays compass direction and elevation for your device to easily find the part of the sky where the sighting will occur (requires capable device).
- Rotate your device to landscape orientation to show exactly where the satellite will pass in the night sky.
- Share sightings via Twitter, Facebook, Mail, Messages and others.
- Automatic download of up to date satellite orbital data, even when the app is not running.
- Offline calculations, no need to be connected to the internet once orbital data has been downloaded.
- Input your location automatically by GPS, select from a map or enter coordinates manually.
- Save your favorite places for easy access.
- Audio cues for the last seconds before the satellite passes by.

Sputnik! on Apple Watch:

- Easily find the next and last sighting at your current location.
- Detailed notifications for upcoming sightings.

* Sputnik! is ad-supported *

What’s New

Version 2.11

- Starlink satellite trains are now detected.

Ratings and Reviews

4.7 out of 5
153 Ratings

153 Ratings

KnezBP ,

RIP iridium flares

I’m afraid it’s not the app, my friends. I just tried another (fortunately for cheap) before realising that a second generation of satellites have been launched over the last couple of years and they don’t reflect sunlight in the same way. It’s almost like a natural stellar phenomenon has been taken away from us. 😢

veloisto ,


Always accurate, just wish I lived away from the city to use it more often. The only thing that could improve it would be an automatic alarm.

KAS118 ,

Really Useful

I guess this is quite basic in what it does - no fancy animations etc - but what it does it’s excels at.

It’s my first port of call to find out what time I can expect to see visible satellites from my locality


Applicate Ltd
14.2 MB

Requires iOS 9.3 and watchOS 2.2 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
In-App Purchases
  1. Go Ad-Free £0.99


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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