When can I see the ISS? What's that light in the sky? The official Heavens-Above app provides you with precise pass predictions for the ISS, visible satellites, Iridium flares and radio satellites. Main features include:
Live sky chart
See what's in the sky above you right now or at a given moment.
Get precise predictions for passes of the International Space Station (ISS) and most visible satellites.
See when Iridium satellites mirror the sunlight directly towards you, resulting in bright flares.
Get passes for amateur radio satellites, complete with uplink and downlink information.
All calculations performed locally
Predictions are generated right on your phone so you only need a data connection every few days.
Orbit and ground track
See details about the orbit of any selected satellite rendered and with all relevant data.
Get detailed information about any satellite, as provided by our Heavens-Above website.
Get a visual overview over passes and animate the position of satellites on the sky chart and on the ground track.
An optional red on black color scheme to preserve your night vision.
Easily find or identify any object in the sky by orienting your device towards it.
Quickly add interesting passes to your calendar so you won't miss them.
Financed by adverts
This version integrates advertisements to make it available for free. Get Heavens-Above Pro to remove the adverts.