# Earthquake+ Alerts & Tracker vs PREP（プレップ）

The clearest difference is review sentiment: Earthquake+ Alerts & Tracker at 82% against PREP（プレップ）'s 29%. Earthquake+ Alerts & Tracker also leads on rating (4.7 vs 2.3) and ads (none vs shown). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Earthquake+ Alerts & Tracker sells 6 in-app purchases, starting at $2.49 per month and PREP（プレップ） sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Earthquake+ Alerts & Tracker holds the better App Store score, 4.7 against 2.3. That said, the two scores are not equally well evidenced: Earthquake+ Alerts & Tracker has 22K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 82% of Earthquake+ Alerts & Tracker's written reviews are positive against 29% of PREP（プレップ）'s.

Earthquake+ Alerts & Tracker ships an update monthly, PREP（プレップ） every 6 weeks. The most recent releases landed on September 25, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Earthquake+ Alerts & Tracker | PREP（プレップ） |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (22K ratings)](https://appshunter.io/ios/app/earthquake-plus-alerts-and-tracker/id395928613/reviews)** | [2.3 (6 ratings)](https://appshunter.io/ios/app/prep/id398954883/reviews) |
| Number of ratings | **22K** | 6 |
| Positive reviews | **82.0% of reviews** | 29.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Best chart rank | **#164** | — |
| Size | 146 MB | 90 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Slava Barouline](https://appshunter.io/developer/359783175) | [RC Solution Co.](https://appshunter.io/developer/398954886) |

## What reviewers say

### Earthquake+ Alerts & Tracker

[App page](https://appshunter.io/ios/app/earthquake-plus-alerts-and-tracker/id395928613)

**Currently charting:** #164 Top Free · Weather, #168 Top Grossing · Weather (US App Store)

Stay informed about seismic and volcanic activity worldwide with real-time alerts, detailed maps, and historical data. Track earthquakes, volcanic eruptions, and tsunamis from over 30 trusted sources. Customize notifications and explore rich visualizations.

**Highlights:** Real-time earthquake and volcano monitoring, Data from 30+ trusted sources, Tsunami and volcanic eruption alerts, Unlimited push notifications, Customizable maps and alerts, Earthquake history and tectonic data, ShakeMap for earthquake impact assessment

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $2.49 | per month |
| Annual Premium Subscription | $19.49 | per year |
| Custom Alerts | Free | one-time |
| Custom Filters | Free | one-time |
| Ad Free | $2.99 | one-time |
| Bonus Pack | $2.99 | one-time |

**What reviewers like**

- 🚀 Real-time earthquake updates
- 🌍 Comprehensive global coverage
- 🗺️ Detailed maps and location information
- ⚠️ Timely alerts and notifications
- 💡 Customizable settings and preferences

**What reviewers complain about**

- 🐛 Occasional app crashes and glitches
- ⏱️ Delayed earthquake notifications
- 💰 Expensive premium subscription
- 📱 Cluttered and non-intuitive interface
- 🔌 Drains device battery quickly

**Reported bugs**

- Server connection issues and missing data
- Duplicate earthquake entries in the list
- Premium features not working as expected
- Notifications not triggering for some users

**Requested features**

- Improved accessibility options
- Earthquake prediction and early warning system
- Integration with other emergency services
- Offline mode for areas with poor connectivity
- More detailed historical earthquake data


### 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 |


## Frequently asked questions

### Is Earthquake+ Alerts & Tracker free?

Earthquake+ Alerts & Tracker is free to download, with in-app purchases available.

### Is PREP（プレップ） free?

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

### Which has better reviews, Earthquake+ Alerts & Tracker or PREP（プレップ）?

Earthquake+ Alerts & Tracker is rated higher. Earthquake+ Alerts & Tracker averages 4.7 out of 5 from 22K ratings, while PREP（プレップ） averages 2.3 from 6 ratings.

### Do Earthquake+ Alerts & Tracker or PREP（プレップ） have ads?

PREP（プレップ） shows ads; Earthquake+ Alerts & Tracker does not.

### Which is updated more often, Earthquake+ Alerts & Tracker or PREP（プレップ）?

Earthquake+ Alerts & Tracker ships an update monthly, and PREP（プレップ） every 6 weeks. Most recently, Earthquake+ Alerts & Tracker was updated on September 25, 2026 and PREP（プレップ） on September 23, 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.*