SatRadar: Satellite Tracker
ISS, Starlink & 10,000 more
About
Track thousands of satellites in real-time, from the ISS to Starlink constellations. Explore orbital paths, view satellite details, and even travel back in time to witness the history of space exploration. The app offers a detailed view of human activity in low Earth orbit.
What's New in SatRadar
1.0.11
September 1, 2026
• New — Next passes. Tap any satellite to see when it next crosses your sky: which way it travels, how high it climbs, how long it stays up, and whether it will actually be visible or pass in Earth’s shadow. • Much faster, steadier launch — several things that could stall startup for a couple of seconds now happen in the background • Search stays responsive while the satellite catalog updates behind it
MoreIn-App Purchases
$9.99
Unlock Starlink
The full mesh, plus the rest of LEO.
Developer apps
FAQ
What satellites can I track with SatRadar?
SatRadar allows you to track over ten thousand satellites, including the International Space Station, Tiangong, global navigation networks like GPS, GLONASS, Galileo, and BeiDou, and weather satellites. With the Starlink unlock, you can also see the full Starlink and OneWeb constellations, as well as commercial Earth-observation fleets.
Does SatRadar require an account to use?
No, SatRadar is free to use and does not require an account. You can start tracking satellites immediately upon opening the app.
How does the 'Time Travel' feature work in SatRadar?
The 'Time Travel' unlock allows you to go back in time, starting from October 1957 with Sputnik 1. You can watch the sky fill with satellites as space exploration history unfolds, including the launch of GPS, the assembly of the ISS, and the rapid deployment of Starlink.
Is SatRadar available on multiple devices?
Yes, SatRadar is supported on both iPhone and iPad devices, providing a consistent experience across Apple's mobile platforms.
How often is SatRadar updated?
The latest version of SatRadar is 1.0.5, and it was last updated on June 10, 2026. While specific update frequency isn't detailed, the recent update indicates ongoing development.
What is the performance like for tracking so many satellites?
SatRadar uses a custom GPU-side SGP4 propagator designed for high performance. It can hold every satellite at sixty frames per second on a phone, allowing for smooth rotation and zooming from city to constellation views.
What is the cost of SatRadar?
SatRadar is free to download and use. Optional one-time purchases are available for the 'Starlink unlock' and 'Time Travel' features, which expand the app's capabilities.
What is the age rating for SatRadar?
SatRadar has an age rating of 4+, making it suitable for a wide range of users interested in space and technology.