# 于良發通訊 vs K3學中文 (寫字認字)

The clearest difference is price: 于良發通訊 at Free against K3學中文 (寫字認字)'s $7.99. 于良發通訊 also leads on update cadence (every 2 months vs every 9 months). K3學中文 (寫字認字)'s advantage is iOS requirement (9.0 vs 12.0). On ads, in-app purchases and device support there is nothing between them.

于良發通訊 is free to download; K3學中文 (寫字認字) costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

于良發通訊 ships an update every 2 months, K3學中文 (寫字認字) every 9 months. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | 于良發通訊 | K3學中文 (寫字認字) |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Size | 58 MB | 362 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pentecostal Yu Leung Fat Primary School](https://appshunter.io/developer/1473931439) | [Yiu Ying Ching](https://appshunter.io/developer/1667170345) |

## What reviewers say

### 于良發通訊

[App page](https://appshunter.io/ios/app/id904886987)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 于良發通訊 free?

于良發通訊 is free to download, with no in-app purchases.

### 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 于良發通訊 or K3學中文 (寫字認字) have ads?

Neither 于良發通訊 nor K3學中文 (寫字認字) shows ads.

### Which is updated more often, 于良發通訊 or K3學中文 (寫字認字)?

于良發通訊 ships an update every 2 months, and K3學中文 (寫字認字) every 9 months. Most recently, 于良發通訊 was updated on October 6, 2026 and K3學中文 (寫字認字) on October 3, 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.*