Comparison

Namadu Epicenter Viewer vs EQMonitor 地震速報

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Namadu Epicenter Viewer

Features
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### This App is for earthquakes occurred in Japan only. ### Namadu epicenter viewer is an App that plots the earthquake catalog collected by the high sensitivity seismograph on the map. This App has the following features. - Epicenter information that occurred in Japan since January 1, 1995, is displayed at arbitrary time and place. - Visualize the tendency of the earthquake occurrence in an easy-to-understand manner by operating the slider. Automatic playback is also available. - Magnitude and depth range of the displayed epicenter can be specified respectively. - The source of the earthquake information is the Japan Meteorological Agency (JMA) Unified Hypocenter Catalogs and the National Institute for Earth Science and Disaster Prevention (NIED) Preliminary Catalog by the Hi-net Automatic System. Limitations - Only earthquake information that occurred on or after January 1, 1995, in Japan and its vicinity can be handled. - Information provided to users is only plotted on the map. Original epicenter information (list of numerical information) is not provided in this App. If you need them, please refer to the information sources such as JMA and NIED website. - Some epicenter elements may be removed during processing. - There is a limit to the number of epicenters that can be processed at once. Epicenter with a small magnitude value may be omitted if the number of epicenters exceeds the limit, such as when setting a long target period or when many earthquakes swarm. - The error information included in the original epicenter element is not reflected in the plot. The epicenter location on the map does not accurately represent the actual epicenter location. In order to know the precise location of the epicenter, please be sure to refer to the data of the information sources. Notes - This App gets epicenter information via iCloud Drive. The device must have a valid iCloud account set up and connected to an available network. - Bookmarks are saved in iCloud, depending on your App settings. Important matter - The epicenter information used by this App is processed by the developer (LeafSight) periodically from information sources and shared on iCloud. Please be aware that the following possibilities exist due to some unexpected reasons. Temporarily there are cases where original information cannot be acquired or processed information cannot be reflected on iCloud. When hypocenter information cannot be permanently acquired from information sources, updating of shared epicenter information may be suspended without prior notice. - The purchase of this App does not guarantee the availability of the latest epicenter information permanently for the future. - For details about the epicenter information used in this App, please refer to the following information sources site. * JMA: Unified Hypocenter Catalogs  · JMA website: http://www.jma.go.jp/  · Source list: http://www.data.jma.go.jp/svd/eqev/data/daily_map/index.html * NIED: Hi-net automatic processing epicenter list  · NIED website: http://www.hinet.bosai.go.jp/  · What is Hi-net: http://www.hinet.bosai.go.jp/summary/ - For inquiries, comments, and requests regarding this App, please contact the developer (LeafSight). Please do not contact the Japan Meteorological Agency or Disaster Prevention Research Institute, which is the hypocenter information source. - This App does not collect any information about your privacy. Access to iCloud is only used to obtain epicenter information and save your bookmarks.

About

EQMonitor 地震速報

Receive timely earthquake and urgent earthquake early warning notifications for Japan. View past earthquake history with a detailed seismic intensity database and monitor real-time seismic activity. Access a visual representation of ground motion data for a comprehensive understanding of seismic events.

Highlights
  • Earthquake and early warning notifications
  • Customizable notification conditions by region
  • View past earthquake history (since 1919)
  • Real-time display of urgent earthquake warnings
  • P-wave/S-wave arrival, max intensity, and epicenter display
  • Access to Strong Motion Monitor visualization
Features
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EQMonitorは、日本全国の地震情報をいち早く受信できるアプリケーションです。 【機能】 ・地震情報・緊急地震速報の通知   ・地域ごとに通知する条件を指定できます   ・気象庁により発表された地震情報や、緊急地震速報を受信し、通知します。 ・過去の地震履歴の閲覧   ・過去に発表された地震情報を遡って確認できます。   ・震度データベースにより、1919年以降の地震履歴を確認できます。 ・緊急地震速報のリアルタイム表示   ・緊急地震速報が発表された際に、P波・S波の予想到達範囲、予想最大震度、震央地を表示します。   ・緊急地震速報は、リアルタイムに更新され、インターネットに接続されていれば、どこからでも確認できます。 ・強震モニタの表示   ・防災科学技術研究所の提供するWebサービス 強震モニタ を表示します。   (※ 強震モニタは、揺れの様子を直感的に捉えることを目的としています。また、リアルタイムで観測値を処理しているため、ノイズ等により観測値が変動します。   そのため、本アプリケーションで表示される観測値は、あくまで参考値としてご利用ください。) 利用規約: https://eqmonitor.app/term_of_service 利用規約(EULA):https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ プライバシーポリシー: https://eqmonitor.app/privacy_policy

Screenshots

Namadu Epicenter Viewer4 screens
EQMonitor 地震速報4 screens

Verdict

The call

The clearest difference is price: EQMonitor 地震速報 at Free against Namadu Epicenter Viewer's $0.99. EQMonitor 地震速報 also leads on update cadence (every 10 days vs every 2 months). Namadu Epicenter Viewer's advantage is in-app purchases (none vs 5) and iOS requirement (13.0 vs 17.6). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

EQMonitor 地震速報 is free to download; Namadu Epicenter Viewer costs $0.99 up front. EQMonitor 地震速報 sells 5 in-app purchases, starting at $1.99 per month. Namadu Epicenter Viewer asks for nothing beyond the download.

UpkeepUpdate frequency

Namadu Epicenter Viewer ships an update every 2 months, EQMonitor 地震速報 every 10 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Namadu Epicenter Viewer versus EQMonitor 地震速報: the parameters behind the verdict, then further details
ParameterNamadu Epicenter ViewerEQMonitor 地震速報
Price$0.99Free — better
Rating—5.0 (6 ratings) — better
Positive reviews—87.5% of reviews
Number of ratings—6 — better
Update frequencyEvery 2 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size2 MB171 MB
Age rating4+4+
DeveloperNoriaki HASHIBARyotaro Onoue

In-app purchases

None

Namadu Epicenter Viewer

No in-app purchases

5 purchases

EQMonitor 地震速報

Subscriptions1
  • EQMonitor Pro$1.991 Month
One-time4
  • コーヒー$0.49
  • エナジードリンクセット$1.99
  • 美味しい牛肉$5.99
Show 1 more
  • うな重$19.99

Questions

Is Namadu Epicenter Viewer free?
Namadu Epicenter Viewer costs $0.99, with no in-app purchases.
Is EQMonitor 地震速報 free?
EQMonitor 地震速報 is free to download, with in-app purchases available.
Do Namadu Epicenter Viewer or EQMonitor 地震速報 have ads?
Neither Namadu Epicenter Viewer nor EQMonitor 地震速報 shows ads.
Which is updated more often, Namadu Epicenter Viewer or EQMonitor 地震速報?
Namadu Epicenter Viewer ships an update every 2 months, and EQMonitor 地震速報 every 10 days. Most recently, Namadu Epicenter Viewer was updated on November 2, 2026 and EQMonitor 地震速報 on November 3, 2026.

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