Sputnik!3.0.9

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.
- Detection of Starlink satellite trains.
- Second by second countdown to the satellite sighting.
- Set reminders of upcoming satellite sightings.
- 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.
- 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.
* Sputnik! is ad-supported *

Version History - Support new satellite data format. 3.0.9 May 11 - Fixed an issue where satellite data was not downloading. 3.0.8 Apr 23 - Fixed an issue where settings would be reset to default values on startup. 3.0.7 09/17/2025 - Updates for increased compatibility with newer devices. 3.0.6 09/16/2025 - Minor improvements behind the scenes. 3.0.5 05/15/2024 - Fixed an issue preventing predictions for Starlink trains. 3.0.4 09/02/2023 - Fixed an issue where satellite data would not download. 3.0.3 07/19/2023 - Fixed an issue which could prevent sighting predictions after changing settings. 3.0.2 01/10/2023 - Minor internal updates. 3.0.1 10/18/2022 - Tiangong space station added
- Updated design 3.0.0 05/29/2021 - Starlink satellite trains are now detected. 2.11 06/10/2020 - Fixed issues with Dark Mode affecting devices running iOS 13. 2.10 04/01/2020 - Added a few of the brightest satellites.

The old Iridium satellites have deorbited and have been replaced with the Iridium NEXT satellite network.
Unfortunately, these new satellites do not produce flares. 2.9 03/31/2020 - Fixed an issue where no predictions would be made if satellite data was outdated. 2.8 05/06/2018 - Optimizations for the iPhone X.
- Predictions for the Hubble Space Telescope are now available. 2.7 02/10/2018 - Fixed an issue where notifications could not be scheduled on iOS7.
- Fixed various issues with the Watch App.

*** The Sputnik! Watch App now requires WatchOS 2 *** 2.6 03/01/2016 - Increased internal cutoff values to show dimmer Iridium flares
- Fixed an issue that would cause occasional Iridium flares to not be included in prediction results
- Fixed an issue that could cause an error message to appear on the Watch app in some circumstances 2.5 07/01/2015 - Minor bug fixes for the Apple Watch companion app. 2.4 04/21/2015 - Sputnik! is now ready for Apple Watch! 2.3 04/10/2015 - Optimizations for iPhone 6 and iPhone 6 Plus. 2.2 11/12/2014 - Minor bug fixes. 2.1 07/02/2014 - Redesign for iOS7.
- Satellite data is now downloaded even if the app is not running.
- Sputnik! now collects anonymous usage statistics to help us improve the app and correct errors. More information can be found in our privacy policy on the support website. 2.0 04/09/2014 - Fixed an issue where brightness would be set to 100% after device auto-lock 1.10 01/16/2013 - Faster calculations on devices with a multi-core processor.
- Minor bug fixes. 1.9 11/03/2012 - iOS 6 compatibility updates.
- Sharing options now include Facebook, Sina Weibo, Mail and Messages (requires iOS 6.0 or higher).

*** Sputnik! now requires iOS 4.3 or higher to run *** 1.8 09/19/2012