# Seismicity vs Xanthi

The clearest difference is update cadence: Xanthi at every 2 months against Seismicity's every 7 months. Seismicity's advantage is iOS requirement (11.0 vs 13.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Seismicity against 5.0 for Xanthi. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Seismicity ships an update every 7 months, Xanthi every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Seismicity | Xanthi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/seismicity-noa/id1596330084/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/xanthi/id6448852190/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 30 MB | 60 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [National Observatory of Athens](https://appshunter.io/developer/1158804991) | [Municipality of Xanthi](https://appshunter.io/developer/1686602647) |

## What reviewers say

### Seismicity

[App page](https://appshunter.io/ios/app/seismicity-noa/id1596330084)

Get real-time, reliable information on seismic events in Greece directly from the National Observatory of Athens. Users can view earthquakes on a map, personalize event details, and report their experiences to contribute to a broader understanding of seismic impact.

**Highlights:** Real-time seismic event information, Map view of seismic events, Personalized event details, Share seismic events, Report felt earthquakes, Light and dark theme options

**Features:** macOS Compatibility

**In-app purchases:** none


### Xanthi

[App page](https://appshunter.io/ios/app/xanthi/id6448852190)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Seismicity free?

Seismicity is free to download, with no in-app purchases.

### Is Xanthi free?

Xanthi is free to download, with no in-app purchases.

### Which has better reviews, Seismicity or Xanthi?

Seismicity and Xanthi are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Seismicity or Xanthi have ads?

Neither Seismicity nor Xanthi shows ads.

### Which is updated more often, Seismicity or Xanthi?

Seismicity ships an update every 7 months, and Xanthi every 2 months. Most recently, Seismicity was updated on October 24, 2026 and Xanthi on October 24, 2026.

---

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