Back in February, researchers at UC Berkeley released an app called MyShake that detects strong earthquakes seconds before the damaging seismic waves arrive. Several months have passed since its release and app has already detected over 200 earthquakes in more than ten countries. TechCrunch reports: The app has received nearly 200,000 downloads, though only a fraction of those are active at any given time; it waits for the phone to sit idle so it can get good readings. Nevertheless, over the first six months the network of sensors has proven quite effective. "We found that MyShake could detect large earthquakes, but also small ones, which we never thought would be possible," one of the app's creators, Qingkai Kong, told New Scientist. A paper describing the early results was published in Geophysical Research Letters -- the abstract gives a general idea of the app's success: "On a typical day about 8000 phones provide acceleration waveform data to the MyShake archive. The on-phone app can detect and trigger on P waves and is capable of recording magnitude 2.5 and larger events. The largest number of waveforms from a single earthquake to date comes from the M5.2 Borrego Springs earthquake in Southern California, for which MyShake collected 103 useful three-component waveforms. The network continues to grow with new downloads from the Google Play store everyday and expands rapidly when public interest in earthquakes peaks such as during an earthquake sequence." You can download the app for Android here.