# 51大师兄 vs 公司查询

The clearest difference is ads: 公司查询 at none against 51大师兄's shown. 51大师兄's advantage is update cadence (every 2 weeks vs every 7 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. 51大师兄 sells 10 one-off in-app purchases and 公司查询 sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

51大师兄 ships an update every 2 weeks, 公司查询 every 7 months. The most recent releases landed on October 27, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 51大师兄 | 公司查询 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 7 months |
| Size | 339 MB | 7 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Big Brother Shanghai Cloud Data Service Co., Ltd](https://appshunter.io/developer/1533046678) | [Beijing Chejiang Internet Technology Co., Ltd.](https://appshunter.io/developer/1680696844) |

## What reviewers say

### 51大师兄

[App page](https://appshunter.io/ios/app/51-ai/id1533046676)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1个月普通大师兄会员 | $7.99 | one-time |
| 3个月普通大师兄会员 | $19.99 | one-time |
| 3个月普通大师兄会员 | $20.99 | one-time |
| 6个月金牌大师兄会员 | $45.99 | one-time |
| 1年普通大师兄会员 | $59.99 | one-time |
| 1年金牌大师兄会员 | $74.99 | one-time |
| 1年普通大师兄会员 | $79.99 | one-time |
| 1年金牌大师兄会员 | $79.99 | one-time |
| 1年钻石大师兄会员 | $79.99 | one-time |
| 1年钻石大师兄会员 | $89.99 | one-time |


### 公司查询

[App page](https://appshunter.io/ios/app/id6526469121)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $4.99 | per month |
| 年会员 | $19.99 | per year |
| 永久会员 | $29.99 | one-time |


## Frequently asked questions

### Is 51大师兄 free?

51大师兄 is free to download, with in-app purchases available.

### Is 公司查询 free?

公司查询 is free to download, with in-app purchases available.

### Do 51大师兄 or 公司查询 have ads?

51大师兄 shows ads; 公司查询 does not.

### Which is updated more often, 51大师兄 or 公司查询?

51大师兄 ships an update every 2 weeks, and 公司查询 every 7 months. Most recently, 51大师兄 was updated on October 27, 2026 and 公司查询 on November 4, 2026.

---

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