Subpoint: ISS Atlas

New: a cloud forecast for every pass - know if you will really see the ISS. Reminders skip overcast skies. Still at a limited-time launch price.

Subpoint shows you where the International Space Station is right now, who is on board, and what the crew is doing today. Unlike other ISS trackers, it doesn't stop at the dot on the map.

Subpoint connects live orbital data with the daily story of the station: which experiments are running, in which module they live, and which astronauts are working on them. It's a tracker, a Crew companion, and a research atlas - in one beautifully made app.

CORE FEATURES

• Live ISS tracker - see the International Space Station overhead in real time, with precise orbit computation from current TLE data.

• Pass predictions with cloud forecast - find out when the ISS is visible from your sky with the naked eye, and see the expected cloud cover for every pass (Apple Weather), so you know if you will actually see it.

• Reminders your way - a heads-up before visible passes, with your own lead time. Pick exactly which passes notify you - and when the sky will be fully overcast, the reminder stays quiet.

• AR spotting - point your phone at the sky and see the ISS and its path over your live camera image. Or launch it straight from your home screen: long-press the app icon.

• Crew on board - full profile for every astronaut on the station: mission, agency, biography, time in space, spacewalks.

• Daily activity - what the crew did today, structured from the NASA Space Station Blog and linked to research experiments and the modules they live in.

• Experiment depth - every research experiment explained in plain English: what it studies, who runs it, in which module. Sourced from public NASA catalogs.

• 3D module viewer - explore the ISS from the inside, with real racks and hardware. Tap a module and see what is happening there right now: Kibo, Columbus, Destiny, Harmony, Tranquility and more.

• Live telemetry - real-time readings straight from the station, with trends and plain-language detail views. The same data flight controllers watch.

• Expeditions - every crew rotation since the station's first expedition: patches, members, mission highlights, attached spacecraft. Over 70 expeditions accessible.

• Beautiful design - Subpoint is built for ISS enthusiasts who want a tracker that respects their attention. No ads, no tracking, no clutter.

DATA SOURCES

Public data from NASA, Celestrak, Space-Track and The Space Devs. Cloud forecasts from Apple Weather. Images from Wikimedia Commons.

PRIVACY

Pass predictions are computed on your device - your precise location never leaves your phone. If you turn on the cloud forecast, only a rounded location (about 20 km) goes to Apple Weather, never to our servers. We don't track users. No ads. No analytics. No third-party SDKs collecting anything.

Subpoint is a companion app for people who want more than a position on a map - for people who want to know what the International Space Station is doing, right now, today, every day.