SpaceSight24: ISS Alerts & Real-Time Satellite Tracker

See the International Space Station tonight. The ISS passes over your location multiple times a week, faster than a shooting star — most people miss it because they don’t know when to look up. SpaceSight24 tells you exactly when and where.

Trusted by 50,000+ users — from families spotting their first satellite to radio operators tracking communications satellites.

? FREE SATELLITE TRACKING FOR EVERYONE

Know When to Look Up

Get an ISS alert 15 minutes before it passes overhead. We’ll tell you the direction, height, and brightness — simple and clear.

See What’s Above You

Watch satellites move live in 3D over your location. The Space Station, GPS, weather satellites, Starlink, SpaceX — all visible in real-time.

Track in Augmented Reality

Tap AR and point your phone at the sky to see satellites and their paths live. Watch the ISS glide across your screen.

Works Offline

Download data before you go. Ideal for dark-sky sites, camping trips, or areas without internet.

? FOR PHOTOGRAPHERS

Want to capture the ISS? Get exact times when it’s brightest and highest. Our precision alerts make long-exposure shots easy — no complex setup required.

? FOR RADIO OPERATORS & ENTHUSIASTS

Amateur Radio Operators

Real-time Doppler shift and contact window calculations for communication satellites.

Weather Satellite Enthusiasts

Plan NOAA satellite receptions with precise timing and signal predictions.

Astrophotographers (Advanced)

ISS solar or lunar transits down to the second. Space weather tools for perfect capture conditions.

Researchers & Professionals

Track 500+ scientific satellites, space debris, and emergency service satellites (COSPAS-SARSAT). Includes orbital collision data and NASA integration.

Satellite Imagery

View real-time NASA Earth images — live weather, fires, and environmental changes from space.

? ONE APP, MANY WAYS TO EXPLORE

Just starting? Simply look up when we alert you.

Getting curious? Explore the 3D sky map and learn about orbits and missions.

Ready to go deeper? Upgrade to Pro for professional tools and precision data.

? WHY SPACESIGHT24 WORKS

Accurate

Trusted by radio operators for its exact timing — that’s precision you can rely on.

No Clutter

No spammy alerts or intrusive ads. Focused, clean experience.

Actually Helpful

Each alert gives you what matters — direction, altitude, brightness, and visibility.

? WHAT YOU GET

Free: ISS tracking • Satellite alerts • Live 3D sky map • Offline mode • Educational details

Pro: Radio Doppler tracking • Weather satellite planning • Astrophotography tools • 500+ research satellites • NASA imagery & debris tracking

?‍? PERFECT FOR

Parents showing kids the Space Station • Astronomy clubs • Amateur radio operators • Astrophotographers • Teachers • Space lovers • Weather enthusiasts

QUICK DETAILS

Works on all Android devices. Location access ensures accurate ISS times (we never share your data). The free version includes all core features; Pro unlocks advanced tools for enthusiasts.

See your first ISS pass tonight — while others miss it, you’ll know exactly when to look up.

Keywords: ISS tracker, Starlink tracker, SpaceX, NASA, GPS tracker, NOAA weather, space weather, satellite finder, astronomy app, real-time tracking, space station, Doppler shift, astrophotography, debris tracking, orbital path, live satellites