Live · Free · No account needed
The Earth never
stops moving.
Tremula monitors earthquakes, auroras, ISS passes, asteroids, and more — alerting you the moment something remarkable happens near you.
Tremula monitors earthquakes, auroras, ISS passes, asteroids, and more — alerting you the moment something remarkable happens near you.
Seven real-time data streams, all free, all government-maintained, delivered to your pocket the moment something worth knowing happens.
Real-time USGS seismic data. See M4.5+ events globally and M2.5+ near you, with magnitude, depth, and location — within minutes of occurring.
NOAA Kp index updated every 3 hours. Know when the northern lights might be visible from your latitude tonight — from quiet to extreme storm.
Real-time International Space Station location. See exactly where it is right now and how far from you — with context about what region it's flying over.
NASA close approach data for the day, plus upcoming meteor shower alerts with peak rates and viewing tips — loaded even without a connection.
USGS volcanic explosion detections logged alongside seismic data. The same network that monitors earthquakes catches volcanic events too.
Last known data is cached locally. When you're off the grid, Tremula shows what it last saw with a clear timestamp — you're never left with a blank screen.
No scraped data. No third-party aggregators. Tremula connects directly to authoritative scientific sources that have been running for decades.
No account. No subscription. Just download and go.
Download on the App Store