# 地震 vs 地震预警

The clearest difference is in-app purchases: 地震预警 at none against 地震's 1. 地震预警 also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 地震 sells 1 one-off in-app purchase. 地震预警 asks for nothing beyond the download.

地震 ships an update every 2 months, 地震预警 every 6 weeks. The most recent releases landed on August 24, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | 地震 | 地震预警 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/id6474761029/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 35 MB | 19 MB |
| Requires iOS | 15.0 | **14** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [方元 朱](https://appshunter.io/developer/468596269) | [健 陈](https://appshunter.io/developer/1129782902) |

## What reviewers say

### 地震

[App page](https://appshunter.io/ios/app/id6474761029)

Get real-time earthquake alerts and historical seismic data. Explore an earthquake encyclopedia covering causes, types, and monitoring. Visualize seismic events on a map with customizable filters.

**Highlights:** Real-time earthquake notifications, Historical earthquake data (1 year), Earthquake encyclopedia, Map visualization of seismic events, Customizable alert thresholds, Map overlays (plate boundaries, population density)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 地震去广告 | $0.99 | one-time |


### 地震预警

[App page](https://appshunter.io/ios/app/id6476338031)

Get timely updates on earthquake information and the latest seismic activity. This utility app supports a dark mode for a clean and enhanced user experience across all supported platforms.

**Highlights:** Real-time earthquake information, Latest seismic activity updates, Dark mode support, Cross-platform compatibility, Clean user interface

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

**In-app purchases:** none


## Frequently asked questions

### Is 地震 free?

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

### Is 地震预警 free?

地震预警 is free to download, with no in-app purchases.

### Do 地震 or 地震预警 have ads?

地震 shows ads; 地震预警 does not.

### Which is updated more often, 地震 or 地震预警?

地震 ships an update every 2 months, and 地震预警 every 6 weeks. Most recently, 地震 was updated on August 24, 2026 and 地震预警 on September 19, 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.*