# 小学英语语法学习 Grammar vs K3學中文 (寫字認字)

The clearest difference is price: 小学英语语法学习 Grammar at Free against K3學中文 (寫字認字)'s $7.99. 小学英语语法学习 Grammar also leads on update cadence (every 5 days vs every 9 months). K3學中文 (寫字認字)'s advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support there is nothing between them.

小学英语语法学习 Grammar is free to download; K3學中文 (寫字認字) costs $7.99 up front. 小学英语语法学习 Grammar sells 3 one-off in-app purchases. K3學中文 (寫字認字) asks for nothing beyond the download.

小学英语语法学习 Grammar ships an update every 5 days, K3學中文 (寫字認字) every 9 months. The most recent releases landed on September 17, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | 小学英语语法学习 Grammar | K3學中文 (寫字認字) |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 9 months |
| Size | 53 MB | 362 MB |
| Requires iOS | 16.0 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [正洪 王](https://appshunter.io/developer/1041876354) | [Yiu Ying Ching](https://appshunter.io/developer/1667170345) |

## What reviewers say

### 小学英语语法学习 Grammar

[App page](https://appshunter.io/ios/app/grammar/id1587685036)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 去除广告 | $0.99 | one-time |
| 解锁答案 | $1.99 | one-time |
| 去除广告和解锁答案 | $1.99 | one-time |


### K3學中文 (寫字認字)

[App page](https://appshunter.io/ios/app/k3/id1669891510)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 小学英语语法学习 Grammar free?

小学英语语法学习 Grammar is free to download, with in-app purchases available.

### Is K3學中文 (寫字認字) free?

K3學中文 (寫字認字) costs $7.99, with no in-app purchases.

### Do 小学英语语法学习 Grammar or K3學中文 (寫字認字) have ads?

小学英语语法学习 Grammar shows ads; K3學中文 (寫字認字) does not.

### Which is updated more often, 小学英语语法学习 Grammar or K3學中文 (寫字認字)?

小学英语语法学习 Grammar ships an update every 5 days, and K3學中文 (寫字認字) every 9 months. Most recently, 小学英语语法学习 Grammar was updated on September 17, 2026 and K3學中文 (寫字認字) on May 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.*