---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "横浜市避難ナビ"
developer_entity: "YOKOHAMA CITY"
bundle_id: "jp.lg.yokohama.city.bousai"
app_store_id: "1611478123"
category: "Weather"
primary_platform: "ios"
primary_monetization: "Free"
offline_capable: false
market_region: "US"
platforms: "iOS & Android"
app_last_updated: "2026-03-31"
report_date: "2026-05-20"
last_verified: "2026-05-20T10:23:30.336Z"
report_version: "1.0.15"
total_reviews: 72
overall_rating: 2.94
confidence: "low"
confidence_score: 0.05
data_age_days: 43
momentum_velocity: "active"
intelligence_version: 2
tags: ["weather", "free", "mobile app", "app review", "app analysis", "residents", "visitors", "yokohama"]
canonical_url: "https://marlvel.ai/apps/jp-lg-yokohama-city-bousai"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# 横浜市避難ナビ App Audit

## TL;DR {#tldr}

- **Category**: Weather · Free
- **Signal**: Rating 2.94

> **TL;DR:** 横浜市避難ナビ is a weather app by YOKOHAMA CITY, rated 2.94/5 by 72 users, available on iOS & Android.
>
> **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** 横浜市避難ナビ is a weather app by YOKOHAMA CITY.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 2.94/5 (72 reviews) |
| **Category** | Weather |
| **Developer** | YOKOHAMA CITY |
| **Pricing** | Free |
| **Platforms** | iOS & Android |
| **Confidence** | Low (0.05/1.0) |
| **Data Age** | 43d |

## Metadata & Market Performance
- **Publisher:** YOKOHAMA CITY
- **Category:** Weather
- **Target Audience:** Residents and visitors in Yokohama City seeking proactive disaster preparedness and real-time emergency guidance.
- **Platforms:** iOS & Android
- **Version Audited:** 1.0.15
- **Audit Date:** 2026-05-20
- **Signal Count:** 0 reviews analyzed
- **Confidence:** Low (0.05/1.0)
- **App Store ID (iOS):** 1611478123
- **Bundle ID:** jp.lg.yokohama.city.bousai
- **Google Play ID:** jp.lg.yokohama.city.bousai
- **Data Window:** Analysis based on signals collected up to 2026-05-20

<!-- section:executive-snapshot -->
## Executive Snapshot
横浜市避難ナビ is a disaster prevention app developed by Yokohama City that supports users in planning and executing evacuation procedures. It integrates AR-based flood simulations, personalized 'My Timeline' evacuation planning, and real-time hazard mapping to assist users during emergencies.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Standard] AR Flood Simulation:** Provides an immersive experience to visualize potential flood damage in the user's current location.
  * *User Intent:* Users seek enhanced value through premium features.
- **[Standard] My Timeline Creation:** Enables users to develop personalized evacuation action plans for wind and flood disasters.
  * *User Intent:* Users value self-expression and personalized experiences.
- **[Standard] Hazard Map & Navigation:** Displays critical data such as sediment disaster alert areas and flood zones, supported by an evacuation compass.
  * *User Intent:* Users want timely prompts to stay engaged without missing updates.
- **[Standard] Emergency Notifications:** Delivers push notifications regarding evacuation orders and real-time status updates on shelter availability.
  * *User Intent:* Users want timely prompts to stay engaged without missing updates.
<!-- /section:features -->

## Monetization Strategy
- **Model:** Free

<!-- section:momentum -->
## App Momentum (Active) {#momentum}

Last updated 49d ago. 5 versions tracked.

> **Cadence:** 5 total versions · 0 majors in last 6 months · 49 days since last update

<!-- /section:momentum -->

<!-- section:so-what -->
## The "So What?" (Strategic Takeaway) {#so-what}

横浜市避難ナビ is an established weather app that is completely free.
With a 2.94/5 rating from 72 reviews, it shows polarized user reception.

<!-- speakable-start -->
> **Bottom Line:** The app serves as a comprehensive, government-backed tool for disaster preparedness, combining personalized planning with real-time location-based safety information.
<!-- speakable-end -->

**Best for:** Residents and visitors in Yokohama City seeking proactive disaster preparedness and real-time emergency guidance.

<!-- /section:so-what -->

<!-- section:metrics -->
## Key Metrics Summary

| Metric | Value |
| :--- | :--- |
| Overall Rating | 2.94/5 |
| Total Reviews | 72 |
| Confidence | Low |
| Pricing Model | Free |
| Platforms | iOS & Android |
| Key Features | 4 analyzed |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **横浜市避難ナビ** (this app) | 2.94/5 | N/A | YOKOHAMA CITY |
| [KBZK Montana Weather](https://marlvel.ai/apps/kbzk-montana-weather) | 4.1/5 | N/A | E.W. Scripps Company |
| [NightFrost](https://marlvel.ai/apps/com-maetsch-nachtfrost) | 1.0/5 | N/A | Heiko Matthias Maetsch |
| [National Weather Forecast - NWS Local Forecasts on your TV!](https://marlvel.ai/apps/national-weather-forecast-nws-local-forecasts-on-y) | N/A/5 | N/A | MyndArc, LLC |
| [My Moon Phase - Lunar Calendar](https://marlvel.ai/apps/com-jrustonapps-my-moon-phase) | 4.8/5 | Thrilled | JRustonApps B.V. |
| [Hot Weather Thermometer](https://marlvel.ai/apps/hot-weather-thermometer) | 4.8/5 | N/A | ExaMobile S.A. |

## Company Profile
- **Developer:** YOKOHAMA CITY

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/jp/app/%E6%A8%AA%E6%B5%9C%E5%B8%82%E9%81%BF%E9%9B%A3%E3%83%8A%E3%83%93/id1611478123?uo=2)
- **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=jp.lg.yokohama.city.bousai&hl=en&gl=jp)
- **Sources:** App store metadata.

## Related Intel Reports
- [*KBZK Montana Weather*](https://marlvel.ai/apps/kbzk-montana-weather) (E.W. Scripps Company) — 4.1/5 Rating | N/A Sentiment
- [*NightFrost*](https://marlvel.ai/apps/com-maetsch-nachtfrost) (Heiko Matthias Maetsch) — 1.0/5 Rating | N/A Sentiment
- [*National Weather Forecast - NWS Local Forecasts on your TV!*](https://marlvel.ai/apps/national-weather-forecast-nws-local-forecasts-on-y) (MyndArc, LLC) — N/A Rating | N/A Sentiment
- [*My Moon Phase - Lunar Calendar*](https://marlvel.ai/apps/com-jrustonapps-my-moon-phase) (JRustonApps B.V.) — 4.8/5 Rating | Excellent Sentiment
- [*Hot Weather Thermometer*](https://marlvel.ai/apps/hot-weather-thermometer) (ExaMobile S.A.) — 4.8/5 Rating | N/A Sentiment
- [*Ty: Storm & Tornado Tracker*](https://marlvel.ai/apps/ty-storm-tornado-tracker) (PlatePal) — 1.0/5 Rating | N/A Sentiment
- [*The Fishing Forecast*](https://marlvel.ai/apps/com-the-fishing-forecast) (Roman Kadykov) — 4.8/5 Rating | N/A Sentiment
- [*HeatAlert: Heat Stress Index*](https://marlvel.ai/apps/heatalert-heat-stress-index) (WeatherFlow) — 3.8/5 Rating | N/A Sentiment
- [*Earthquake Alert - Seismic Map*](https://marlvel.ai/apps/earthquake-alert-seismic-map) (WarthogLab) — 4.7/5 Rating | N/A Sentiment
- [*14 days Weather*](https://marlvel.ai/apps/14-days-weather) (Tasmanic Editions) — 4.5/5 Rating | N/A Sentiment

## Methodology {#methodology}

This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline:

1. **Signal Collection & Normalization** — Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps.
2. **Feature & Market Positioning Analysis** — Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks.
3. **User Sentiment Analysis** — Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction and evidence quoting.
4. **Competitive Landscape Analysis** — Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category.
5. **Intelligence Synthesis** — Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights.

- **Confidence Score:** 0.05/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 0
- **Data Sources:** App Store metadata
- **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform
- **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence.
- **Report Age:** 43 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/jp-lg-yokohama-city-bousai)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.