Appworthy

Japan Alerts

Earthquake, tsunami & volcano

Itchigoo
Download on theApp Store
App Store rating4.4★23 ratings
PriceFreeIn-app $7.99
Age4+Store age rating
Size139 MBiPhone download
CategoryUtilities
DeveloperItchigoo

What we found

Full report

Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.

Money

Not yet tested.

The store currently lists version 3.2, updated 2026-10-30.

Preview

Screenshot 1Screenshot 2Screenshot 3Screenshot 4Screenshot 5Screenshot 6Screenshot 7Screenshot 8

Store screenshots supplied by the developer.

About this app

Japan Alerts delivers real-time earthquake, tsunami, volcano, typhoon, and all kinds of evacuation alerts from the Japan Meteorological Agency (JMA), translated into 12 languages.

WHO IS THIS APP FOR?

- Residents and expats who need alerts in their own language

- Travelers — add your destinations (up to 6 in Premium) and arrive prepared

- Anyone with family or a loved one in Japan

- Families who want a shared earthquake safety plan

- Anyone fascinated by Japanese seismology and volcanology

REAL-TIME ALERTS

- Earthquake alerts with Shindo intensity and magnitude

- S-wave countdown on emergency alerts: how many seconds before the shaking reaches you

- Tsunami warnings with expected wave height and affected coastline

- Municipality-level evacuation orders for every hazard — floods, landslides, storm surge and more — by warning level, in plain language…

From the developer’s store description.

For developers and the curious

The full report

The evidence, sources, measurements and versions behind every label above.

Findings and evidence

Not yet tested
Not yet tested. No analysis has been published for this app. A missing label is not a clean bill of health.

What reviewers report

No review coverage

No review analysis published for this app.

Measurements

3 measured · 5 not assessed

“Not assessed” means we could not measure it. It is never a zero and never a pass.

From store data and reviews

Developer replies to reviews
Not assessed
Fewer than 50 reviews scanned — too few to state a rate
Price in the store description
The store description doesn’t list prices (most don’t)
Cancelling, in the store description
The store description doesn’t say how to cancel (most don’t)
Themes reported by reviewers
Not assessed
This app's reviews have not been assessed yet
Five-star share of ratings
65–79% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.

In the app package we scanned

No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.

Sensitive permissions
Not assessed
No package has been scanned for this app
Analytics or tracking SDKs in the scanned package
Not assessed
No package has been scanned for this app
Advertising SDKs in the scanned package
Not assessed
No package has been scanned for this app
How we know

Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured

Versions and dates analysed

Not yet tested

Not yet tested. No analysis has been run for this app, so there is no version or date to report.

Store update history

Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.

App Store

Version 3.2 · 2026-10-30
• More accurate alerts: you are notified when the intensity JMA measures in the region of your place reaches your threshold. • Intensity at your places: on each quake, the intensity at your most affected place, and all your places on the detail screen. • Fixes and improvements.
Version 3.1 · 2026-10-23
What's new in 3.1 • Shaking around your places: after every felt quake, the intensity JMA measured near your places, on a map. Premium. • Where the ash will fall: after an eruption, JMA's forecast hour by hour, and what it means for each of your places. Premium. • Fixes and improvements.

Assessment record

Status
Not yet tested
App identifier
japan-alerts
Sources used
None recorded
Reviews read
None recorded
Package examined
No package scan
Human inspection
Not completed
How we know
Measurement vocabulary
1.4

Store facts

App Store

What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.

App Store

Store rating
4.43 ★ · 23 ratings
Version
3.2
Updated
30 Oct 2026
Price
Free · In-app purchases
Age rating
4+
Size
139 MB
Open in App Store
Developer
Itchigoo
Category
Utilities
Listing price
Free · In-app purchases

Purchases the store lists

 What this app sells

From the store listing. Billing terms are read from each purchase’s name — the stores don’t publish them — so treat them as a strong hint, not a disclosure.

Subscriptions1
Annual SubscriptionYearly$7.99

Method and limits

What this report can and cannot show

What a missing label means

Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.

Limits of this report

  • A package scan is static. It identifies code and text in one Android build. It does not measure a live ad session, test a deletion request, or count the steps needed to cancel.
  • Reviews keep their sample. A review-only charge shows distinct reviewers, the share and the sample size, and is published only once it clears that label’s published threshold. Calibration labels are machine-drafted and not yet confirmed by a person.
  • Not assessed is a state. It is never a zero and never a pass.
  • A missing label is not a clean bill of health. It means the evidence did not support one, not that the app is problem-free.
Not yet human-reviewed. A human review gives an app hands-on, recorded measurements. None has been run for this app. Hands-on inspections are not yet open.
Review thresholds Read the methodology For developers

Request a correction

[email protected]

Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.

Report a factual error — free Email a correction