Very helpful!

This is an amazing app and it could spare your life...!!

I live in the US, but Im worried about my friends and family in Japan, so I got this app to see how frequent they are getting aftershocks. I was surprised to see that it works anywhere you are! I am planning on using during my trip to Japan this summer.

Arashi lover (マジでガチで嵐！) about PREP（プレップ） - 総合防災アプリ