# 铁合金在线 vs 链冶材

The clearest difference is update cadence: 链冶材 at every 3 weeks against 铁合金在线's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

铁合金在线 ships an update every 3 months, 链冶材 every 3 weeks. The most recent releases landed on September 17, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 铁合金在线 | 链冶材 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 153 MB | 46 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu Felo Internet Tech. Co. ,Ltd.](https://appshunter.io/developer/897496769) | [唐山银耐联电子商务有限公司](https://appshunter.io/developer/1381056002) |

## What reviewers say

### 铁合金在线

[App page](https://appshunter.io/ios/app/id897496766)

**In-app purchases:** none


### 链冶材

[App page](https://appshunter.io/ios/app/id6444025345)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 铁合金在线 free?

铁合金在线 is free to download, with no in-app purchases.

### Is 链冶材 free?

链冶材 is free to download, with no in-app purchases.

### Do 铁合金在线 or 链冶材 have ads?

Neither 铁合金在线 nor 链冶材 shows ads.

### Which is updated more often, 铁合金在线 or 链冶材?

铁合金在线 ships an update every 3 months, and 链冶材 every 3 weeks. Most recently, 铁合金在线 was updated on September 17, 2026 and 链冶材 on September 9, 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.*