# 焊林院 vs 型钢大师

The clearest difference is in-app purchases: 焊林院 at none against 型钢大师's 3. 焊林院 also leads on update cadence (monthly vs every 4 months). 型钢大师's advantage is iOS requirement (9.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. 型钢大师 sells 3 one-off in-app purchases. 焊林院 asks for nothing beyond the download.

焊林院 ships an update monthly, 型钢大师 every 4 months. The most recent releases landed on October 5, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | 焊林院 | 型钢大师 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Size | 61 MB | 117 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai KongDe IT Co., LTD.](https://appshunter.io/developer/1235370082) | [颖达 陈](https://appshunter.io/developer/1058507663) |

## What reviewers say

### 焊林院

[App page](https://appshunter.io/ios/app/id1235370083)

**Features:** macOS Compatibility

**In-app purchases:** none


### 型钢大师

[App page](https://appshunter.io/ios/app/id1247264708)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 打赏 | $1.99 | one-time |
| 永久购买所有高级功能 | $3.99 | one-time |
| 解锁全版本 | $5.99 | one-time |


## Frequently asked questions

### Is 焊林院 free?

焊林院 is free to download, with no in-app purchases.

### Is 型钢大师 free?

型钢大师 is free to download, with in-app purchases available.

### Do 焊林院 or 型钢大师 have ads?

Neither 焊林院 nor 型钢大师 shows ads.

### Which is updated more often, 焊林院 or 型钢大师?

焊林院 ships an update monthly, and 型钢大师 every 4 months. Most recently, 焊林院 was updated on October 5, 2026 and 型钢大师 on October 4, 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.*