# MyShake Earthquake Alerts vs CoastWarn

The clearest difference is rating: CoastWarn at 5.0 against MyShake Earthquake Alerts's 3.3. CoastWarn also leads on update cadence (every 6 days vs every 3 months). MyShake Earthquake Alerts's advantage is in-app purchases (none vs 1) and ratings volume (1.9K vs 1). On price and ads there is nothing between them.

Both are free to download. CoastWarn sells 1 one-off in-app purchase. MyShake Earthquake Alerts asks for nothing beyond the download.

CoastWarn holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: MyShake Earthquake Alerts has 1.9K ratings behind it against 1, so its average is the more settled of the two.

MyShake Earthquake Alerts ships an update every 3 months, CoastWarn every 6 days. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MyShake Earthquake Alerts | CoastWarn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (1.9K ratings)](https://appshunter.io/ios/app/myshake-earthquake-alerts/id1467058529/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/coastwarn/id6798089542/reviews)** |
| Number of ratings | **1.9K** | 1 |
| Positive reviews | 51.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#50** | — |
| Size | 135 MB | 3 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [University of California, Berkeley](https://appshunter.io/developer/413373017) | [Ryan Dean](https://appshunter.io/developer/1850630498) |

## What reviewers say

### MyShake Earthquake Alerts

[App page](https://appshunter.io/ios/app/myshake-earthquake-alerts/id1467058529)

**Currently charting:** #50 Top Free · Weather (US App Store)

Get timely earthquake early warnings for California, Oregon, and Washington. Access safety tips, explore global earthquake data on a map, and contribute to a citizen-science seismic network. Receive notifications for earthquakes based on your region and magnitude preferences.

**Highlights:** Earthquake Early Warnings, Earthquake Safety Tips, Global Earthquake Map, Customizable Notifications, Citizen-Science Seismic Network, Multilingual Support

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Early earthquake warning
- 👍 Useful for earthquake preparedness
- 🚨 Alerts before shaking starts
- 🗺️ Detailed earthquake information
- 🤖 Automated reporting of felt earthquakes

**What reviewers complain about**

- 🐛 Unreliable notifications
- 🔔 Excessive or unnecessary alerts
- 🔋 High battery consumption
- 🗺️ Difficult to filter by location
- 🤖 Inability to report felt earthquakes

**Reported bugs**

- App freezing or crashing when reporting earthquakes
- Inconsistent or outdated earthquake data
- Location services not working as expected

**Requested features**

- Customizable alert settings by location
- Louder and more distinct alert sounds
- Support for iPad and tablet devices
- Ability to view historical earthquake data
- Integration with other emergency systems


### CoastWarn

[App page](https://appshunter.io/ios/app/coastwarn/id6798089542)

Receive timely alerts for coastal flooding based on your custom water-level thresholds. Monitor NOAA data, get tide charts, and stay informed about potential flood events affecting your property or boat.

**Highlights:** Customizable flood alert thresholds, NOAA water-level monitoring, Tide charts and predictions, Flood expected notifications, Alert history, Station map search

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CoastWarn Lifetime Unlock | $19.99 | one-time |


## Frequently asked questions

### Is MyShake Earthquake Alerts free?

MyShake Earthquake Alerts is free to download, with no in-app purchases.

### Is CoastWarn free?

CoastWarn is free to download, with in-app purchases available.

### Which has better reviews, MyShake Earthquake Alerts or CoastWarn?

CoastWarn is rated higher. MyShake Earthquake Alerts averages 3.3 out of 5 from 1.9K ratings, while CoastWarn averages 5.0 from 1 ratings.

### Do MyShake Earthquake Alerts or CoastWarn have ads?

Neither MyShake Earthquake Alerts nor CoastWarn shows ads.

### Which is updated more often, MyShake Earthquake Alerts or CoastWarn?

MyShake Earthquake Alerts ships an update every 3 months, and CoastWarn every 6 days. Most recently, MyShake Earthquake Alerts was updated on November 11, 2026 and CoastWarn on October 31, 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.*