# 知乎 vs CMDb2.0

The clearest difference is review sentiment: CMDb2.0 at 100% against 知乎's 16%. CMDb2.0 also leads on rating (5.0 vs 4.5) and ads (none vs shown). 知乎's advantage is ratings volume (26K vs 2) and chart position (#123 vs unranked). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 知乎 sells 13 in-app purchases, starting at $2.99 per month and CMDb2.0 sells 6 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

CMDb2.0 holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: 知乎 has 26K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 16% of 知乎's written reviews are positive against 100% of CMDb2.0's.

知乎 ships an update weekly, CMDb2.0 every 2 weeks. The most recent releases landed on September 28, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | 知乎 | CMDb2.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (26K ratings)](https://appshunter.io/ios/app/id432274380/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cmdb20/id6757096456/reviews)** |
| Number of ratings | **26K** | 2 |
| Positive reviews | 16.2% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | — | Freemium |
| Best chart rank | **#123** | — |
| Size | 454 MB | 97 MB |
| Requires iOS | **13.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Beijing Zhizhetianxia Technology Co., Ltd.](https://appshunter.io/developer/432274383) | [天津幕威艾迪网络科技有限公司](https://appshunter.io/developer/1645467858) |

## What reviewers say

### 知乎

[App page](https://appshunter.io/ios/app/id432274380)

**Currently charting:** #123 Top Grossing · Social Networking (US App Store)

Discover a high-quality question and answer community with original videos. Create, share, and explore content seamlessly with advanced AI search capabilities. Join now to engage in professional discussions and interactive exchanges.	Send feedback or inquiries to app@zhihu.com.

**Features:** Vision Pro support

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 盐选会员月卡(1 个月) | $2.99 | per month |
| 盐选会员月卡(1 个月) | $2.99 | per month |
| 盐选会员连续月卡（1 个月） | $2.99 | per month |
| 超级盐选会员月卡（1 个月） | $3.99 | per month |
| 盐选会员季卡(3 个月) | $7.99 | per 3 months |
| 盐选会员连续季卡（3 个月） | $7.99 | per 3 months |
| 盐选会员年卡(1 年) | $29.99 | per year |
| 6 个知乎币 | $0.99 | one-time |
| 12 个知乎币 | $1.99 | one-time |
| 盐选会员月卡 | $3.99 | one-time |
| 68 个知乎币 | $9.99 | one-time |
| 盐选会员季卡 | $9.99 | one-time |
| 盐选会员年卡 | $14.99 | one-time |

**What reviewers like**

- 🌟 Useful knowledge sharing platform
- 💡 Interesting content and ideas
- 📚 Ability to learn new things

**What reviewers complain about**

- 🚫 Strict censorship and content control
- 🤖 Biased and misleading content
- 🤑 Excessive ads and monetization
- 🔒 Privacy concerns and data collection
- 🚧 Poor user experience and app performance

**Reported bugs**

- Frequent app crashes and freezes
- Inability to unsubscribe from paid features

**Requested features**

- Improved content moderation and fairness
- Better user privacy controls
- Optimized app performance and stability


### CMDb2.0

[App page](https://appshunter.io/ios/app/cmdb20/id6757096456)

This app facilitates professional networking and project collaboration within the film and arts industries. It offers identity verification, standardized profiles, and a platform for job postings, project invitations, and industry news.

**Highlights:** Professional identity verification, Standardized film professional profiles, Project and job invitations, Industry recruitment and project boards, Company and organization verification, Student and art academy access

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Monthly | $1.99 | per month |
| Standard Monthly | $2.99 | per month |
| Student Quarterly | $4.99 | per 3 months |
| Standard Quarterly | $9.99 | per 3 months |
| Student Annual | $14.99 | per year |
| Standard Annual | $29.99 | per year |


## Frequently asked questions

### Is 知乎 free?

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

### Is CMDb2.0 free?

CMDb2.0 is free to download, with in-app purchases available.

### Which has better reviews, 知乎 or CMDb2.0?

CMDb2.0 is rated higher. 知乎 averages 4.5 out of 5 from 26K ratings, while CMDb2.0 averages 5.0 from 2 ratings.

### Do 知乎 or CMDb2.0 have ads?

知乎 shows ads; CMDb2.0 does not.

### Which is updated more often, 知乎 or CMDb2.0?

知乎 ships an update weekly, and CMDb2.0 every 2 weeks. Most recently, 知乎 was updated on September 28, 2026 and CMDb2.0 on September 7, 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.*