When can I see the ISS? What is this light in the sky? The official Heavens-Above app provides you with accurate predictions of ISS passes, visible satellites and radio satellites. Main features include:

Live Sky Map
See what’s in the sky above you right now or at any given time.

Passage forecasts
Get accurate forecasts for the International Space Station (ISS) passes and the most visible satellites.

radio satellites
Get passes from amateur radio satellites, complete with uplink and downlink information.

All calculations performed locally
Forecasts are generated right on your phone so you only need a data connection once in a while.

Ground orbit and trajectory
See orbit details for a selected satellite displayed along with all relevant data.

Satellite details
Get detailed information about all satellites as provided by our Heavens-Above website.

Calendar
Get a visual overview of passes and animate the position of satellites on the sky map and on the ground track.

night mode
An optional red-on-black color scheme to preserve your night vision.

Tracer
Easily find and identify any object in the sky by aiming your device at it.

Calendar integration
Quickly add interesting moments to your calendar so you don’t miss them.

No ads
This version is ad-free. You can try the free version before buying this one.