# PREP（プレップ） vs アメフリ

The clearest difference is review sentiment: アメフリ at 76% against PREP（プレップ）'s 29%. アメフリ also leads on rating (4.7 vs 2.3) and ads (none vs shown). On price, ratings volume, in-app purchases 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 and アメフリ sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

アメフリ holds the better App Store score, 4.7 against 2.3. Both are backed by a comparable volume of ratings — 6 and 6 respectively. Written reviews point the same way: 29% of PREP（プレップ）'s written reviews are positive against 76% of アメフリ's.

PREP（プレップ） ships an update every 6 weeks, アメフリ weekly. The most recent releases landed on October 18, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | PREP（プレップ） | アメフリ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (6 ratings)](https://appshunter.io/ios/app/prep/id398954883/reviews) | **[4.7 (6 ratings)](https://appshunter.io/ios/app/id876799915/reviews)** |
| Number of ratings | 6 | 6 |
| Positive reviews | 29.1% of reviews | **76.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 20 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RC Solution Co.](https://appshunter.io/developer/398954886) | [Shinichiro Shiba](https://appshunter.io/developer/876799918) |

## 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 |


### アメフリ

[App page](https://appshunter.io/ios/app/id876799915)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PlanA | $0.99 | per month |
| PlanB | $1.99 | per month |


## 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 アメフリ free?

アメフリ is free to download, with in-app purchases available.

### Which has better reviews, PREP（プレップ） or アメフリ?

アメフリ is rated higher. PREP（プレップ） averages 2.3 out of 5 from 6 ratings, while アメフリ averages 4.7 from 6 ratings.

### Do PREP（プレップ） or アメフリ have ads?

PREP（プレップ） shows ads; アメフリ does not.

### Which is updated more often, PREP（プレップ） or アメフリ?

PREP（プレップ） ships an update every 6 weeks, and アメフリ weekly. Most recently, PREP（プレップ） was updated on October 18, 2026 and アメフリ on October 5, 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.*