# Epicenter vs Seismometer

Epicenter and Seismometer both sit at 4.4 stars, but that hides the real split: 80% of Epicenter's written reviews are positive against 13% of Seismometer's. Epicenter also leads on update cadence (every 4 days vs every 2 months). Seismometer's advantage is ratings volume (442 vs 39) and monetization model (free with in-app purchases vs paid). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Epicenter sells 2 in-app purchases, starting at $1.99 per month and Seismometer sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.4 for Epicenter against 4.5 for Seismometer. That said, the two scores are not equally well evidenced: Seismometer has 442 ratings behind it against 39, so its average is the more settled of the two. Written reviews are what separate them: 80% of Epicenter's written reviews are positive against 13% of Seismometer's.

Epicenter ships an update every 4 days, Seismometer every 2 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Epicenter | Seismometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (39 ratings)](https://appshunter.io/ios/app/epicenter-earthquake-map/id972755325/reviews) | **[4.5 (442 ratings)](https://appshunter.io/ios/app/seismometer-earthquake-alarm/id1107233513/reviews)** |
| Number of ratings | 39 | **442** |
| Positive reviews | **80.0% of reviews** | 13.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 102 MB | 9 MB |
| Requires iOS | 17.4 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jess Taylor](https://appshunter.io/developer/417821730) | [Apostolos Samaras](https://appshunter.io/developer/429472940) |

## What reviewers say

### Epicenter

[App page](https://appshunter.io/ios/app/epicenter-earthquake-map/id972755325)

Explore global earthquake activity from the past 30 days on an interactive globe. View detailed information, animate seismic events over time, and customize map displays. Includes companion apps for Apple Watch and a Today Widget for quick access to recent data.

**Highlights:** 30 days of global earthquake data, Interactive rotatable and zoomable globe, Earthquake details (magnitude, depth, source), Date scroller and animation, Customizable map terrain and fault lines, Apple Watch app for recent data, Today Widget for quick access

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Epicenter+ Monthly | $1.99 | per month |
| Epicenter+ Annual | $9.99 | per year |


### Seismometer

[App page](https://appshunter.io/ios/app/seismometer-earthquake-alarm/id1107233513)

Transform your device into a sensitive seismograph to monitor real-time seismic vibrations. Customize sensitivity, receive instant alerts for significant activity, and interpret data with an intuitive interface. Explore Earth's movements for educational, home monitoring, or entertainment purposes.

**Highlights:** Real-time seismic monitoring, Customizable sensitivity levels, Instant alert notifications, User-friendly interface, Detects various vibrations

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A Genuine Helper | $1.99 | one-time |
| A True Hero | $9.99 | one-time |
| An Awesome Being | $19.99 | one-time |
| One of a Kind | $39.99 | one-time |
| A Charismatic One | $59.99 | one-time |
| A Bold Tycoon | $79.99 | one-time |
| A True Gazillionaire | $99.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 💡 Sensitivity adjustment option
- 😌 Provides peace of mind

**What reviewers complain about**

- 🔋 Drains battery fast
- ⚠️ Inaccurate earthquake detection
- ⏳ Delayed notifications
- 🤔 Confusing alarm settings

**Reported bugs**

- Alarm stuck on
- App does not work
- Internet connection issues reported incorrectly
- False earthquake alerts

**Requested features**

- Add Richter scale
- Add Mercalli scale
- Run as background app
- Live earthquake alarms
- Improve detection sensitivity


## Frequently asked questions

### Is Epicenter free?

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

### Is Seismometer free?

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

### Which has better reviews, Epicenter or Seismometer?

Seismometer is rated higher. Epicenter averages 4.4 out of 5 from 39 ratings, while Seismometer averages 4.5 from 442 ratings.

### Do Epicenter or Seismometer have ads?

Neither Epicenter nor Seismometer shows ads.

### Which is updated more often, Epicenter or Seismometer?

Epicenter ships an update every 4 days, and Seismometer every 2 months. Most recently, Epicenter was updated on October 24, 2026 and Seismometer on October 26, 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.*