# QuakeJP

> Japan earthquake visualization app with historical and recent seismic event data. (iPhone/iPad app by doublek.)

- Source: https://appshunter.io/ios/app/quakejp/id432766219 (this page in markdown: same URL + `.md`)
- Developer: [doublek](https://appshunter.io/developer/423189623)
- Category: Weather, News
- Price: Free
- Rating: 2.30/5 from 3 App Store ratings · 22 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 1 MB
- Languages: American English, Japanese
- Released: 2011-05-03
- Data updated: 2026-10-06
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/quakejp/id432766219/reviews.md

## What is QuakeJP?

This application displays earthquakes in Japan very graphically.

Main Features
*Latest Quakes :
  display latest about 20 earthquakes in Japan
*Big Quakes in 2-year :
  display earthquakes in magnitude 5.0 or more for two years in Japan
*Big Quakes (1900-) :
 display major earthquakes since 1900 in Japan

How To
*Each pin corresponds to an earth quake.
Each pin classifies according to the scale of the earthquake.
  -Over M7.0 : red color pin
  -Over M6.0 : purple color pin
  -Under M6.0 : green color pin
*When each pin is tapped, details of the corresponding earth quake are displayed in the under box.
When a detail information is selected, the corresponding pin is displayed in the center of your screen.
*The reduced scale changes by Pinch In (Pinch Out) over the map.

Application Consideartion
*This application can't display earthquakes in real time.
*This application uses the information of earthquakes from Japan Weather Association.
*This application can display the earthquake about 20 min. after the announcement.
*This application doesn't display the earthquake which detail is unknown.
*This application displays the depth of a shallow earthquake as 0km.
*When the earthquakes happened in the same place, each hypocenter information is displayed by tapping the same pin.
*The information about major earthquakes is referring to the book(science chronology) and the information on Wikipedia.

## Key features

- Latest earthquake display
- Historical major earthquake data (1900-)
- Two-year big quake records (M5.0+)
- Color-coded pins by magnitude
- Detailed earthquake information on tap
- Map zoom and pan functionality

## Recent user reviews (10 of 22)

All indexed reviews: https://appshunter.io/ios/app/quakejp/id432766219/reviews.md

### 1/5 — Could Be Much Better

*2020-08-29*

As other reviews have pointed out, this app is very slow to update the latest earthquake activity.  Also, there is that obnoxious banner advertisement on the screen that completely prevents you from actually concentrating on the earthquake information.  Last but not least, there is no settings button on the screen or offer to pay a fee to remove the annoying advertisements from the screen so that you can actually make use of the app.  This app is an overall failure in my humble opinion.

### 2/5 — 地震

*2020-05-04*

表示しない地震があります

### 1/5 — 地震の日時が

*2020-01-17*

全く表示されなくなった。震源の位置はわかってもいつおきたのかわからないのでは意味が無い。

### 2/5 — 落ちます

*2018-10-09*

iOS12になってから、起動せずに落ちる様になりました。対応して頂けると助かります。よろしくお願いします。

### 2/5 — 情報が…

*2018-05-12*

少ないし、最近の大地震も無いし、ピンで見れるのはありがたいが、過去の情報が少なすぎ。

### 1/5 — おかしい

*2015-05-31*

画面が崩れてる
なんとかしてください

### 1/5 — ダメだよね

*2015-05-12*

最新情報を載せろよ！
ダメダメじゃんw

### 4/5 — 感謝

*2014-09-26*

震源地だけではなく周辺の震度も分かれば最高で。

### 3/5 — アップデートするほど改悪になるよ

*2014-03-19*

今まで直ぐに震源地が地図で確認出来るから重宝してたけど、久しぶりに開いたら世界地図が表示されてるが、直前に起きた国内震源地が表示されてない。継続して頑張って欲しいな。

### 2/5 — ピンは震源地だけだった

*2013-10-07*

1回分の地震の震源地とその周辺の震度を表示するんだと思ってたら、
過去数回分の地震の震源地だけをまとめて表示してるんですね。
1回の地震が震源地からどの辺りまで揺れが広がったのかを視覚的に見たかったので、なんか残念です。
それと、震源地（ピンの位置）が他のアプリと違うのはなぜなんでしょう？

## Frequently asked questions about QuakeJP

### Does QuakeJP display earthquakes in real time?

QuakeJP does not display earthquakes in real time. It can display earthquake information approximately 20 minutes after its announcement by the Japan Weather Association.

### What is the rating of QuakeJP?

QuakeJP has a rating of 2.3 stars based on 3 user ratings.

### What information is available for each earthquake in QuakeJP?

When a pin is tapped, details of the corresponding earthquake are displayed. This includes magnitude and depth. Major earthquake information is sourced from books and Wikipedia.

### What devices does QuakeJP support?

QuakeJP is supported on iPhone, iPad, and iPod devices.

### How often is QuakeJP updated?

The latest version of QuakeJP is 5.0, and it was last updated on January 20, 2020.

### What is the age rating for QuakeJP?

QuakeJP has an age rating of 4+, making it suitable for a wide range of users.

### Does QuakeJP show earthquakes outside of Japan?

No, QuakeJP is specifically designed to display earthquakes occurring in Japan only.

### Does QuakeJP have ads?

No, QuakeJP does not contain advertisements.

## Version history (last 5 releases)

### 5.0 — 2020-01-20

- On iOS13 the detail information of each earth quake was not displayed. It was fixed.
- Overall layout was changed.

### 4.0 — 2015-10-24

- Changed overall layout
- Added one function: you can select the former or the latter earthquake event

### 3.1 — 2012-01-19

- Bug( when shaken) fixed.

### 3.0 — 2012-01-13

- The major earthquake information since 1900 is added.
- The 20 latest earthquake information is displayed. 
- The big earthquake information for 2 years is displayed.
- The scale of maps at the first time is changed. 
- It corrects so that a scale and the center position may not be initialized at the time of a tab change.

### 2.0 — 2011-07-15

- The observed maximum seismic intensity is displayed.
- The location of the pin is adjusted when the epicenters are identical.
- Time from a detailed announcement of the earthquake to the display by the application program is shortened.
- Change of advertising space for iPad (Height is reduced.)
- The pin display at the present place is corrected.

## Apps similar to QuakeJP

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Earthquake Information Lite](https://appshunter.io/ios/app/earthquake-information-lite/id412784885) | 5.0 (1) | Free | Weather |
| [地震サーチ](https://appshunter.io/ios/app/id1191417880) | — | Free | Weather |
| [地震速報ヘルパー](https://appshunter.io/ios/app/id6777993980) | — | Free | Weather |
| [P2P地震情報 モバイル](https://appshunter.io/ios/app/p2p/id1457443047) | — | Free | Weather |
| [地震チェック](https://appshunter.io/ios/app/id6657978780) | — | $0.99 | Weather |
| [津波 - Tsunami](https://appshunter.io/ios/app/tsunami/id1615362492) | — | Free | Weather |

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-06.*