# 四年级英语下册 vs 数形加油站HD

The clearest difference is in-app purchases: 数形加油站HD at none against 四年级英语下册's 1. 四年级英语下册's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. 四年级英语下册 sells 1 one-off in-app purchase. 数形加油站HD asks for nothing beyond the download.

## The numbers

| Metric | 四年级英语下册 | 数形加油站HD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 89 MB | 191 MB |
| Requires iOS | **8.0** | 9.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [灿 吴](https://appshunter.io/developer/1533808980) | [Beijing Ruozhuo Technology Co., Ltd](https://appshunter.io/developer/1758901031) |

## What reviewers say

### 四年级英语下册

[App page](https://appshunter.io/ios/app/id1550095992)

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### 数形加油站HD

[App page](https://appshunter.io/ios/app/hd/id6751450237)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 四年级英语下册 free?

四年级英语下册 is free to download, with in-app purchases available.

### Is 数形加油站HD free?

数形加油站HD is free to download, with no in-app purchases.

### Do 四年级英语下册 or 数形加油站HD have ads?

Neither 四年级英语下册 nor 数形加油站HD 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.*