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Sputnik!

Sputnik!

ISS, Starlink & Satellites

727 ratings
189 reviews
🔧 Utilities
🌟 Lifestyle
Free
In-App Purchases

Details

  • Released
  • Updated

Features

Developer

Applicate Ltd
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🧾$0.99
In-App Purchase↘︎
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About

Track the International Space Station and bright satellites with precise timing and location data. Get second-by-second countdowns, set reminders, and view satellite paths in the night sky. Supports offline calculations and sharing sightings.

✓Accurate satellite and ISS sighting predictions
✓Starlink satellite train detection
✓Second-by-second countdowns
✓Sighting reminders
✓Compass direction and elevation display
✓Night sky path visualization
✓Offline calculations
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What users say

Summarized from real user reviews of Sputnik!. Based on 727 reviews and a 4.8/5 average, it highlights the 4 positives and 4 negatives reviewers mention most about this Utilities app.

Positive things

  • 🚀Accurate satellite tracking
  • 👍Easy to use interface
  • 🔭Supports tracking of various satellites (ISS, Hubble, Starlink)
  • ⏰Provides countdown and reminders for sightings

Negative things

  • 🐛App not working/crashing for some users
  • 🔍Unclear information about satellite visibility (e.g. what 'enters Earth's shadow' means)
  • 🔧Difficulty updating satellite data
  • 🙈Dark mode text visibility issues
See all reviews

What's New in Sputnik!

3.0.9

May 11, 2026

- Support new satellite data format.

1

In-App Purchases

$0.99

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User reviews

Most RecentHighest RatedLowest Rated

It's Kept Up With Newer Satellite Technology

For several years, I enjoyed using Satellite! to reliably predict the appearance of Iridium flares from the now non-existent Iridium satellites. After they disappeared I thought the app had outlived its usefulness. I was wrong. I soon found that I could now use Satellite! to view the International Space Station, the Chinese Space Station Tiangong, the Hubble Telescope, and now even the newer Starlink Satellites with the same pinpoint accuracy! It’s like Satellite! has reinvented itself! Great app!!!
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Jmf 9Jmf 9

Used to be great but has stopped working

I used to use this quite often and it was really handy to have on my phone.

Recently though the app has stopped working and just says “No Sightings” for all the categories. I’ve tried uninstalling and reinstalling to no avail the app now just seems to be broken/useless.
WaveyDavey13WaveyDavey13

Changing screens

I get very frustrated that when I press to get details of sighting I get into that stupid trace line and can’t get out.
Bail lieBail lie

Great free app for find ISS!

I have had this out for years! Back when it tracked iridium flares. Now it tracks the ISS, Chinese station, and Hubble. I love this app. It shows the magnitudes and device orientation from your location. Although I do miss the iridium flares.
AntichemtrailAntichemtrail

Top quality app for your celestial viewing.

This app provides the user with top quality viewing information .
Pippdiddy the Seahag.Pippdiddy the Seahag.
See 184 more reviews

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User experience

🐞

Reported Bugs

3 issues

App reporting 'No Sightings' for all categories

Bug

Null check errors when selecting satellite sightings

Bug

Issues with location settings and data updates

Bug
✨

Requested Features

4 requests

Add support for more satellite types

Feature

Improve sky chart visualization and orientation

Feature

Provide filtering options (e.g. by elevation, magnitude)

Feature

Implement automatic data updates

Feature

FAQ

What does Sputnik! do?

Sputnik! is a tool that predicts when the International Space Station (ISS) will pass by your location or when a bright satellite will be visible. It provides accurate timing, direction, and elevation data for sightings, along with countdowns and reminders.

What are the key features of Sputnik!?

Key features include accurate second-by-second predictions for satellite and ISS sightings, detection of Starlink satellite trains, customizable reminders, compass direction and elevation display, night sky path visualization, and offline calculation capabilities.

How much does Sputnik! cost?

The application is ad-supported. While the description mentions in-app purchases, it does not specify what these are for or if they are required for full functionality. The core tracking features are available with ads.

What devices is Sputnik! compatible with?

The app is available for mobile devices and also has a version for Apple Watch. Some features, like compass direction and elevation display, require a capable device.

What are common use cases for Sputnik!?

Common use cases include planning to observe the ISS or bright satellites from your location, tracking Starlink satellite trains, and sharing interesting sightings with friends. It's ideal for amateur astronomers and space enthusiasts.