Earthquake apps

How do I get this earthquake alarm on my phone? Thanks.

The app most of us use for timely alarms is called SkyAlert. But Mexican citizens also received an alarm via the presidential emergency system, so it got a bit confusing with the competing alarms. The thing is, they work. In this respect, Mexico appears to be way ahead of the curve. While SkyAlert is also now available in the USA, you need the Mexican app. It may not be available to those of you with foreign telephone numbers.
https://skyalert.mx/

I hope you speak Spanish.

The app I use for after-the-fact notifications of earthquakes is simply called Earthquake. It tells me, for example, that we had a 3.3 temblor just off Zihuatanejo's coast at 3:34 this morning.
https://earthquake.app/