# PREP（プレップ） vs 静岡県防災

The clearest difference is in-app purchases: 静岡県防災 at none against PREP（プレップ）'s 2. 静岡県防災 also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, review sentiment, 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. 静岡県防災 asks for nothing beyond the download.

PREP（プレップ） ships an update every 6 weeks, 静岡県防災 every 5 weeks. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | PREP（プレップ） | 静岡県防災 |
| --- | --- | --- |
| 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** | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 105 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RC Solution Co.](https://appshunter.io/developer/398954886) | [Shizuoka Prefecture](https://appshunter.io/developer/1455301912) |

## 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 |


### 静岡県防災

[App page](https://appshunter.io/ios/app/id1455301913)

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

**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 静岡県防災 free?

静岡県防災 is free to download, with no in-app purchases.

### Do PREP（プレップ） or 静岡県防災 have ads?

PREP（プレップ） shows ads; 静岡県防災 does not.

### Which is updated more often, PREP（プレップ） or 静岡県防災?

PREP（プレップ） ships an update every 6 weeks, and 静岡県防災 every 5 weeks. Most recently, PREP（プレップ） was updated on October 14, 2026 and 静岡県防災 on October 2, 2026.

---

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