# 四年级数学上册 vs 小学同步四年级

The clearest difference is iOS requirement: 四年级数学上册 at 9.0 against 小学同步四年级's 12.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 四年级数学上册 sells 1 one-off in-app purchase and 小学同步四年级 sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 四年级数学上册 | 小学同步四年级 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Size | 132 MB | 99 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [立勋 丁](https://appshunter.io/developer/1477711317) | [广州格林软件技术有限公司](https://appshunter.io/developer/1796064959) |

## What reviewers say

### 四年级数学上册

[App page](https://appshunter.io/ios/app/id1499336901)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁教材完整内容并去除广告 | $1.99 | one-time |


### 小学同步四年级

[App page](https://appshunter.io/ios/app/id1558050537)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 小学同步四年级季卡 | $5.99 | one-time |
| 小学同步四年级年卡 | $9.99 | one-time |


## Frequently asked questions

### Is 四年级数学上册 free?

四年级数学上册 is free to download, with in-app purchases available.

### Is 小学同步四年级 free?

小学同步四年级 is free to download, with in-app purchases available.

### Do 四年级数学上册 or 小学同步四年级 have ads?

Neither 四年级数学上册 nor 小学同步四年级 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.*