# 知乎 vs 水族圈

The clearest difference is in-app purchases: 水族圈 at none against 知乎's 10. 水族圈 also leads on ads (none vs shown). 知乎's advantage is chart position (#139 vs unranked). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 知乎 sells 8 in-app purchases, starting at $2.99 per month. 水族圈 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 12, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 知乎 | 水族圈 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (26K ratings)](https://appshunter.io/ios/app/id432274380/reviews)** | — |
| Number of ratings | **26K** | — |
| Positive reviews | 15.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Best chart rank | **#139** | — |
| Size | 464 MB | 63 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 9+ |
| Developer | [Beijing Zhizhetianxia Technology Co., Ltd.](https://appshunter.io/developer/432274383) | [大伦 王](https://appshunter.io/developer/1452981396) |

## What reviewers say

### 知乎

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

**Currently charting:** #139 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 (8)**

| 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 |
| 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 |
| 6 个知乎币 | $0.99 | one-time |
| 盐选会员月卡 | $3.99 | one-time |
| 68 个知乎币 | $9.99 | 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


### 水族圈

[App page](https://appshunter.io/ios/app/id6468041012)

**In-app purchases:** none


## Frequently asked questions

### Is 知乎 free?

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

### Is 水族圈 free?

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

### Do 知乎 or 水族圈 have ads?

知乎 shows ads; 水族圈 does not.

### Which is updated more often, 知乎 or 水族圈?

知乎 ships an update weekly, and 水族圈 weekly. Most recently, 知乎 was updated on November 12, 2026 and 水族圈 on November 3, 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.*