Great app...read about it on aramatheydidnt ^^

This is a really good app, and I plan to use it on my exchange trip to Japan this summer ^_~
it seems to be really helpful for warning people for earthquakes that could happen any moment, even if it only gives them a few seconds notice. I have friends who live in Japan, and it is also great to make sure they are alright!
-@doyoulikebird_ from twitter

Hahahahahahf about PREP（プレップ） - 総合防災アプリ