About this app
Overview, features and application details
Know exactly when the ISS flies over your house. Heavens-Above gives precise satellite pass predictions — the ISS, Starlink, and radio sats — for your location.
Heavens-Above is the official companion app of heavens-above.com, the site satellite watchers have trusted for years. It answers the question every skywatcher asks: when can I see the space station from where I am?
The app calculates precise pass predictions for the International Space Station, visible satellites, and amateur radio satellites — complete with uplink and downlink frequencies and doppler-shifted timing. All the math runs on your phone, so you only need a data connection every few days to refresh the orbit data.
There is a live sky chart showing what is overhead right now, orbit and ground-track views for any satellite, a night mode that keeps your eyes dark-adapted, and a tracker that points you at a satellite in real time using your phone\u0027s compass. Interesting passes can drop straight into your calendar so you never miss a bright ISS flyover.
At around 6 MB it is tiny, which is refreshing. A paid Pro version removes the ads; the free one has everything you need to start spotting satellites tonight.
