# PREP（プレップ） vs 大阪防災アプリ

The clearest difference is in-app purchases: 大阪防災アプリ at none against PREP（プレップ）'s 2. 大阪防災アプリ also leads on ads (none vs shown) and iOS requirement (12.2 vs 15.0). PREP（プレップ）'s advantage is review sentiment (29% vs 21%). On price, update cadence and device support there is nothing between them.

Both are free to download. PREP（プレップ） sells 2 in-app purchases, starting at $0.99 per month. 大阪防災アプリ asks for nothing beyond the download.

PREP（プレップ） ships an update every 6 weeks, 大阪防災アプリ every 2 months. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | PREP（プレップ） | 大阪防災アプリ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (6 ratings)](https://appshunter.io/ios/app/prep/id398954883/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | **29.1% of reviews** | 20.8% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 171 MB |
| Requires iOS | 15.0 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RC Solution Co.](https://appshunter.io/developer/398954886) | [大阪府](https://appshunter.io/developer/1726301418) |

## What reviewers say

### PREP（プレップ）

[App page](https://appshunter.io/ios/app/prep/id398954883)

This app provides real-time disaster information based on your current location, including alerts for earthquakes, tsunamis, and heavy rain. It helps you plan for disasters by allowing you to set action plans and share information with family members. The app also offers guidance during emergencies to ensure safe actions.

**Highlights:** Real-time disaster information by location, Disaster action planning, Emergency guidance, Family information sharing, Various disaster alerts (earthquake, tsunami, rain, etc.), Precipitation forecast timeline

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PREP Premium Service | $0.99 | per month |
| PREP ファミリーサービス | $3.49 | per month |


### 大阪防災アプリ

[App page](https://appshunter.io/ios/app/id1092387835)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PREP（プレップ） free?

PREP（プレップ） is free to download, with in-app purchases available.

### Is 大阪防災アプリ free?

大阪防災アプリ is free to download, with no in-app purchases.

### Do PREP（プレップ） or 大阪防災アプリ have ads?

PREP（プレップ） shows ads; 大阪防災アプリ does not.

### Which is updated more often, PREP（プレップ） or 大阪防災アプリ?

PREP（プレップ） ships an update every 6 weeks, and 大阪防災アプリ every 2 months. Most recently, PREP（プレップ） was updated on September 23, 2026 and 大阪防災アプリ on September 10, 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.*