PREP（プレップ） - 総合防災アプリ

Shown for US

• Free to download
• In-app purchases

Last verified 31 Jul 2026

Shown for US

2.3 6 ratings · App Store

1. 2/5Was better before "Premium" version

   I have used this app for a long time and purchased the no ads and multiple locations options. Now RC Solutions thought it is better to pay a monthly fee for the "premium" version which does the same as my previous paid add-ons. There is even "High Speed Delivery". The only problem is that now the notification come slow or later than before. If you say it is a "Premium" subscription service then make sure your "Premium" services are working correctly. Definitely a step backward.

   OkiiKuma · 31 Jul 2026

2. 1/5Basic functionality is broken.

   Can’t even set your location. I always get this error “位置を選択し直してください”. Yes, my location settings are set to “Always” and “Precise Location.” Is this app still being developed?

   presonance · 31 Jul 2026

3. 3/5Not working quite right

   I've had this application for several years and it always gave me a warning for quakes in my area, just as it should. Lately, though, it's been alerting me about every quake of any size from anywhere in Japan. It started maybe a week ago and I'm tired of it lighting up my phone all the time and scaring me for no reason. I don't want to start ignoring it and then miss a warning I need. I even turned off notifications and it still comes. Please fix this so I can get only mine. There was a quake I felt last week and it didn't even pop up on the list until 10 or 15 minutes later, making me think I was crazy and just feeling things that didn't happen. Please please fix these issues.

   Nekomusume418 · 31 Jul 2026

4. 1/5Yurekuru was so much better.

   Let’s start with the first issue. The app states Japanese and English language, but English support was removed when transitioning to the PREP app. Either this should be changed in the App Store or the developers should notify us as to when an English version should come. Please, don’t leave us hanging either. Second. I logged in earlier this week and updated the app this morning. After updating, my account logged out. Minor problem? Yes. Completely avoidable? Most likely. Most concerning are the notifications. You can choose what type of push notifications to get, but they’re not working correctly. I get so many push notifications, it’s hard to tell if they’re important or not. Turning off the type of notification does nothing for heavy rain alerts. Even then, there’s no threshold for heavy rain alerts. Yurekuru had a great system for allowing us to choose the severity of earthquake alerts. I think this app would be so much better if we could tailor our alerts just like we could on Yurekuru. So for now, and this gets one star. It’s going to take more than English language support to change my mind.

   Kagerou313 · 31 Jul 2026

5. 5/5Useful Warning System

   It's a pretty solid app that gives you as much warning as possible before an earthquake. I paid the extra money to add additional locations because the sensors nearest to me don't always pick up the earthquakes that you end up feeling. It's nice to be able to add locations. I also like that you can set the sensitivity of the alarms you set - I want to be warned for bigger earthquakes, not the little ones, so this makes a lot of sense. It's an intuitive app, and I like it!

   EEALee · 31 Jul 2026

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