# Disaster Preparedness TokyoApp vs BDC

The clearest difference is update cadence: Disaster Preparedness TokyoApp at every 3 weeks against BDC's every 4 months. BDC's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Disaster Preparedness TokyoApp ships an update every 3 weeks, BDC every 4 months. The most recent releases landed on November 12, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Disaster Preparedness TokyoApp | BDC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/disaster-preparedness-tokyoapp/id1290558619/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 30.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 293 MB | 185 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tokyo Metropolitan Government](https://appshunter.io/developer/616616621) | [MILESEUM INC.](https://appshunter.io/developer/1736446436) |

## What reviewers say

### Disaster Preparedness TokyoApp

[App page](https://appshunter.io/ios/app/disaster-preparedness-tokyoapp/id1290558619)

This app provides essential disaster preparedness knowledge through interactive learning and practical tools. It offers multilingual support, specialized modes for children and seniors, and offline access to vital information like maps and guides.

**Highlights:** Disaster Readiness Guide booklets, Disaster prevention quizzes with points, Disaster preparedness checklist with alerts, Interactive disaster prevention maps, Evacuation route planning, Latest disaster and weather information, Multilingual support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### BDC

[App page](https://appshunter.io/ios/app/bdc/id6479596132)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Disaster Preparedness TokyoApp free?

Disaster Preparedness TokyoApp is free to download, with no in-app purchases.

### Is BDC free?

BDC is free to download, with no in-app purchases.

### Do Disaster Preparedness TokyoApp or BDC have ads?

Neither Disaster Preparedness TokyoApp nor BDC shows ads.

### Which is updated more often, Disaster Preparedness TokyoApp or BDC?

Disaster Preparedness TokyoApp ships an update every 3 weeks, and BDC every 4 months. Most recently, Disaster Preparedness TokyoApp was updated on November 12, 2026 and BDC on November 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*