# PREP（プレップ） vs 震度Now!

The clearest difference is rating: 震度Now! at 5.0 against PREP（プレップ）'s 2.3. 震度Now! also leads on review sentiment (67% vs 29%). PREP（プレップ）'s advantage is ratings volume (6 vs 1). On price, update cadence, ads and in-app purchases 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 震度Now! sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

震度Now! holds the better App Store score, 5.0 against 2.3. That said, the two scores are not equally well evidenced: PREP（プレップ） has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 29% of PREP（プレップ）'s written reviews are positive against 67% of 震度Now!'s.

PREP（プレップ） ships an update every 6 weeks, 震度Now! monthly. Both last shipped on September 23, 2026.

## The numbers

| Metric | PREP（プレップ） | 震度Now! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (6 ratings)](https://appshunter.io/ios/app/prep/id398954883/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/now/id1185234444/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 29.1% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 90 MB | 58 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [RC Solution Co.](https://appshunter.io/developer/398954886) | [hidehiko aihara](https://appshunter.io/developer/1178520609) |

## 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 |


### 震度Now!

[App page](https://appshunter.io/ios/app/now/id1185234444)

This app provides real-time earthquake information, including location, magnitude, and intensity. It also features a "Now Here!" function to share your current location with contacts via SNS. The app displays data from the National Research Institute for Earth Science and Disaster Resilience.

**Highlights:** Real-time earthquake information, Epicenter and intensity details, Magnitude and occurrence time, Share current location with image and address, SNS integration for sharing

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告停止課金モデル | $2.99 | per month |
| Coffee (Regular) | $0.49 | one-time |
| 開発者応援 | $1.99 | one-time |
| Coffee (Large) | $1.99 | one-time |
| Cake Set | $5.99 | one-time |


## 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 震度Now! free?

震度Now! is free to download, with in-app purchases available.

### Which has better reviews, PREP（プレップ） or 震度Now!?

震度Now! is rated higher. PREP（プレップ） averages 2.3 out of 5 from 6 ratings, while 震度Now! averages 5.0 from 1 ratings.

### Do PREP（プレップ） or 震度Now! have ads?

Both PREP（プレップ） and 震度Now! show ads.

### Which is updated more often, PREP（プレップ） or 震度Now!?

PREP（プレップ） ships an update every 6 weeks, and 震度Now! monthly. Most recently, PREP（プレップ） was updated on September 23, 2026 and 震度Now! on September 23, 2026.

---

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