# 天眼查 vs 51机械

The clearest difference is review sentiment: 51机械 at 100% against 天眼查's 37%. 51机械 also leads on rating (5.0 vs 2.4) and in-app purchases (none vs 2). 天眼查's advantage is ratings volume (116 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 天眼查 sells 2 one-off in-app purchases. 51机械 asks for nothing beyond the download.

51机械 holds the better App Store score, 5.0 against 2.4. That said, the two scores are not equally well evidenced: 天眼查 has 116 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 37% of 天眼查's written reviews are positive against 100% of 51机械's.

天眼查 ships an update fortnightly, 51机械 monthly. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 天眼查 | 51机械 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (116 ratings)](https://appshunter.io/ios/app/id1048918751/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/51/id6498631490/reviews)** |
| Number of ratings | **116** | 1 |
| Positive reviews | 36.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 112 MB | 49 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Beijing Jindi Technology co.,Ltd](https://appshunter.io/developer/1105240127) | [HuiGong Technology (HangZhou) Co., Ltd.](https://appshunter.io/developer/1741716341) |

## What reviewers say

### 天眼查

[App page](https://appshunter.io/ios/app/id1048918751)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 天眼查1年VIP | $49.99 | one-time |
| 天眼查1季度SVIP | $89.99 | one-time |

**What reviewers like**

- 👍 Comprehensive business information
- 👍 Useful for business decisions
- 👍 Data is rich and abundant
- 👍 Provides company news and insights
- 👍 Good for investor decision-making

**What reviewers complain about**

- 💰 High cost for VIP/paid features
- 💰 Aggressive monetization strategies
- 💰 Many features require payment
- 💰 Unclear pricing tiers
- 💰 VIP features are expensive

**Reported bugs**

- Information outdated
- Data not updated promptly
- Network connection errors
- App crashes or freezes
- Login issues

**Requested features**

- iPad version needed
- Local search function
- Ability to search by ID number
- History of search records
- More user-friendly payment options (e.g., iTunes Pay)


### 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 天眼查 free?

天眼查 is free to download, with in-app purchases available.

### Is 51机械 free?

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

### Which has better reviews, 天眼查 or 51机械?

51机械 is rated higher. 天眼查 averages 2.4 out of 5 from 116 ratings, while 51机械 averages 5.0 from 1 ratings.

### Do 天眼查 or 51机械 have ads?

Neither 天眼查 nor 51机械 shows ads.

### Which is updated more often, 天眼查 or 51机械?

天眼查 ships an update fortnightly, and 51机械 monthly. Most recently, 天眼查 was updated on October 20, 2026 and 51机械 on October 15, 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.*