# 地震预警 vs 思明堂识字

The clearest difference is in-app purchases: 思明堂识字 at none against 地震预警's 5. 思明堂识字 also leads on ads (none vs shown) and device support (3 vs 1). On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. 地震预警 sells 5 in-app purchases, starting at $0.99 per month. 思明堂识字 asks for nothing beyond the download.

地震预警 ships an update every 5 weeks, 思明堂识字 monthly. The most recent releases landed on October 25, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 地震预警 | 思明堂识字 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (36 ratings)](https://appshunter.io/ios/app/app/id6474966090/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | 13.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 106 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fuding Rongfeng Network Technology Co., Ltd.](https://appshunter.io/developer/1361888260) | [上海思明堂生物科技股份有限公司](https://appshunter.io/developer/1219886529) |

## What reviewers say

### 地震预警

[App page](https://appshunter.io/ios/app/app/id6474966090)

Get real-time earthquake alerts and comprehensive seismic information from an authoritative source. This app provides instant notifications for national seismic events, nearby tremors, and daily earthquake summaries. It also includes educational content on earthquake preparedness and useful emergency tools.

**Highlights:** Real-time earthquake alerts, Nearby tremor notifications, Daily earthquake summaries, Customizable magnitude filtering, Historical seismic data visualization, Earthquake preparedness guides, Emergency tools like compass

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 地震预警月卡订阅会员 | $0.99 | per month |
| 地震预警年卡订阅会员 | $3.99 | per year |
| 地震预警月卡会员 | $0.99 | one-time |
| 地震预警年卡会员 | $3.99 | one-time |
| 地震预警永久会员 | $6.99 | one-time |


### 思明堂识字

[App page](https://appshunter.io/ios/app/id6788594056)

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

**In-app purchases:** none


## Frequently asked questions

### Is 地震预警 free?

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

### Is 思明堂识字 free?

思明堂识字 is free to download, with no in-app purchases.

### Do 地震预警 or 思明堂识字 have ads?

地震预警 shows ads; 思明堂识字 does not.

### Which is updated more often, 地震预警 or 思明堂识字?

地震预警 ships an update every 5 weeks, and 思明堂识字 monthly. Most recently, 地震预警 was updated on October 25, 2026 and 思明堂识字 on October 11, 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.*