# Random vs 地震预警

The clearest difference is in-app purchases: Random at none against 地震预警's 1. Random also leads on update cadence (every 4 days vs every 2 weeks) and iOS requirement (11.1 vs 15.6). On price, ads and device support there is nothing between them.

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

Random ships an update every 4 days, 地震预警 every 2 weeks. The most recent releases landed on September 15, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Random | 地震预警 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Size | 38 MB | 37 MB |
| Requires iOS | **11.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [浩强 王](https://appshunter.io/developer/1628229082) | [安波 张](https://appshunter.io/developer/1582565166) |

## What reviewers say

### Random

[App page](https://appshunter.io/ios/app/random-random-number-todo/id1628457272)

**Features:** macOS Compatibility

**In-app purchases:** none


### 地震预警

[App page](https://appshunter.io/ios/app/and/id6751939807)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 地震预警会员 | $5.99 | one-time |


## Frequently asked questions

### Is Random free?

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

### Is 地震预警 free?

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

### Do Random or 地震预警 have ads?

Neither Random nor 地震预警 shows ads.

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

Random ships an update every 4 days, and 地震预警 every 2 weeks. Most recently, Random was updated on September 15, 2026 and 地震预警 on September 17, 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.*