# 地震 vs EngNotes

The clearest difference is ads: EngNotes at none against 地震's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. 地震 sells 1 one-off in-app purchase and EngNotes sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 地震 | EngNotes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/id6474761029/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 94 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [方元 朱](https://appshunter.io/developer/468596269) | [Hangzhou Plastic Engine Technology Co., Ltd](https://appshunter.io/developer/1761472358) |

## 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 |


### EngNotes

[App page](https://appshunter.io/ios/app/engnotes/id6757151961)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EngNotes Pro | $2.99 | per month |


## Frequently asked questions

### Is 地震 free?

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

### Is EngNotes free?

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

### Do 地震 or EngNotes have ads?

地震 shows ads; EngNotes does not.

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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.*