Cosmik — free real-time 3D satellite tracker
Track the ISS, Starlink & 20,000+ satellites in real-time 3D, see what's flying over your city right now, and get free alerts before every rocket launch. Runs in any browser — no app, no login, free. Long description: Cosmik (gocosmik.com) is a free consumer web app for tracking everything in orbit: the ISS, Starlink and 20,000+ satellites rendered live in 3D from public orbital data, every rocket launch with countdowns, webcasts and free alerts, and a real-time solar system. It publishes launch news in 7 languages and offers embeddable launch widgets. No login, built mobile-first. Logo: [attach marketing/cosmik-logo-1024.png] Screenshots: [attach marketing/ph/1-earth-swarm.png, 3-live-map.png, 4-launch-center.png] Founded: 2026 · HQ: France · Email (if required): hi@gocosmik.com Social: https://x.com/gocosmik · https://t.me/gocosmik Pricing: Free Alternatives to (for comparison sites): N2YO, Heavens-Above, ISS Detector, Stellarium Web
The interesting insight isn't that people want to track satellites—it's that you're turning space activity into something people can casually follow, the way they follow weather or live sports. I'd keep validating whether users return because of real-time tracking or because Cosmik becomes their default destination whenever something meaningful happens in space. Those are very different retention loops.