# 二年级数学下册 vs 水印相机

The clearest difference is device support: 二年级数学下册 at 3 against 水印相机's 1. 二年级数学下册 also leads on iOS requirement (8.0 vs 17). On price, ads and in-app purchases there is nothing between them.

Both are free to download. 二年级数学下册 sells 1 one-off in-app purchase and 水印相机 sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 二年级数学下册 | 水印相机 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Size | 178 MB | 118 MB |
| Requires iOS | **8.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [灿 吴](https://appshunter.io/developer/1533808980) | [先全 顾](https://appshunter.io/developer/1706065914) |

## What reviewers say

### 二年级数学下册

[App page](https://appshunter.io/ios/app/id1553475261)

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### 水印相机

[App page](https://appshunter.io/ios/app/id6499102489)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $2.99 | per 7 days |
| 月订阅 | $3.99 | per month |
| 终生会员 | $7.99 | one-time |


## Frequently asked questions

### Is 二年级数学下册 free?

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

### Is 水印相机 free?

水印相机 is free to download, with in-app purchases available.

### Do 二年级数学下册 or 水印相机 have ads?

Neither 二年级数学下册 nor 水印相机 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.*