Overpass predicts when the Starlink train, the ISS, and other bright satellites cross your sky. It downloads public orbital data once, then computes every pass on your iPhone — offline, no account, no server.
iPhone
Satellite-tracking apps tend to be cluttered star-map toys or thin wrappers around someone else's server. Overpass is neither: it is a pass predictor. It answers one question — when should I step outside and look up? — and it computes the answer itself, on your phone, with a propagator verified against the standard reference test vectors.
Freshly launched Starlink stacks make a bright, evenly spaced chain across the sky. Overpass tells you when the next train crosses yours, while it's still bright enough to be worth watching.
Every visible ISS pass and the other bright satellites worth stepping outside for, with direction, elevation, and timing for your exact location.
Orbital elements are downloaded once, then every pass is propagated locally. No server computes anything for you — predictions work in a paddock with no reception.
Pass times are typically within a minute. Satellites do manoeuvre, so Overpass makes refreshing the data before a big pass a one-tap habit, not a mystery.
Grant location for effortless predictions, or type coordinates in manually. Either way it never leaves the device.
Overpass Unlimited is a single one-time purchase — every Starlink train, all bright-satellite passes, and a custom minimum-elevation filter. No subscription, and your next visible pass is always free.
Read the full Privacy Policy, or visit Support.
Overpass uses public satellite orbital element sets provided by USSPACECOM and distributed by CelesTrak (celestrak.org). Overpass is an independent app and is not affiliated with, sponsored by, or endorsed by SpaceX, Starlink, NASA, or any government agency.