# 二年级数学上册 vs 地灾监测

The clearest difference is in-app purchases: 地灾监测 at none against 二年级数学上册's 1. 二年级数学上册's advantage is iOS requirement (8.0 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. 二年级数学上册 sells 1 one-off in-app purchase. 地灾监测 asks for nothing beyond the download.

## The numbers

| Metric | 二年级数学上册 | 地灾监测 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 7 months |
| Size | 145 MB | 25 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [灿 吴](https://appshunter.io/developer/1533808980) | [虓 赵](https://appshunter.io/developer/1628264766) |

## What reviewers say

### 二年级数学上册

[App page](https://appshunter.io/ios/app/id1552885479)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁全部点读内容 | $1.99 | one-time |


### 地灾监测

[App page](https://appshunter.io/ios/app/id6447237703)

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

**In-app purchases:** none


## Frequently asked questions

### Is 二年级数学上册 free?

二年级数学上册 is free to download, with in-app purchases available.

### Is 地灾监测 free?

地灾监测 is free to download, with no in-app purchases.

### Do 二年级数学上册 or 地灾监测 have ads?

Neither 二年级数学上册 nor 地灾监测 shows ads.

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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.*