# 铁甲 vs 51机械

The clearest difference is rating: 51机械 at 5.0 against 铁甲's 4.7. 铁甲's advantage is ratings volume (9 vs 1) and iOS requirement (11.0 vs 13.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

51机械 holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: 铁甲 has 9 ratings behind it against 1, so its average is the more settled of the two.

铁甲 ships an update every 5 weeks, 51机械 monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | 铁甲 | 51机械 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (9 ratings)](https://appshunter.io/ios/app/id989144923/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/51/id6498631490/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 162 MB | 49 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [铁甲工程机械网](https://appshunter.io/developer/646680108) | [HuiGong Technology (HangZhou) Co., Ltd.](https://appshunter.io/developer/1741716341) |

## What reviewers say

### 铁甲

[App page](https://appshunter.io/ios/app/id989144923)

**Features:** macOS Compatibility

**In-app purchases:** none


### 51机械

[App page](https://appshunter.io/ios/app/51/id6498631490)

This platform connects owners of construction machinery with job opportunities for rental and sale. It also facilitates recruitment for machine operators and provides tools for maintenance, repair, and project management. Users can access a marketplace for new and used equipment, streamlining operations and transactions within the industry.

**Highlights:** Find jobs and rentals for excavators, loaders, and cranes, Recruit certified and experienced machine operators, Access repair and maintenance services for machinery, Utilize project management and accounting tools, Buy and sell used construction equipment, Digital construction site management

**In-app purchases:** none


## Frequently asked questions

### Is 铁甲 free?

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

### Is 51机械 free?

51机械 is free to download, with no in-app purchases.

### Which has better reviews, 铁甲 or 51机械?

51机械 is rated higher. 铁甲 averages 4.7 out of 5 from 9 ratings, while 51机械 averages 5.0 from 1 ratings.

### Do 铁甲 or 51机械 have ads?

Neither 铁甲 nor 51机械 shows ads.

### Which is updated more often, 铁甲 or 51机械?

铁甲 ships an update every 5 weeks, and 51机械 monthly. Most recently, 铁甲 was updated on October 24, 2026 and 51机械 on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*