# 知乎 vs 洞天艺术

The clearest difference is ads: 洞天艺术 at none against 知乎's shown. 知乎's advantage is chart position (#147 vs unranked). On price, update cadence, 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 洞天艺术 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

知乎 ships an update weekly, 洞天艺术 fortnightly. The most recent releases landed on October 23, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 知乎 | 洞天艺术 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (26K ratings)](https://appshunter.io/ios/app/id432274380/reviews)** | — |
| Number of ratings | **26K** | — |
| Positive reviews | 16.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Fortnightly |
| Best chart rank | **#147** | — |
| Size | 458 MB | 103 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Beijing Zhizhetianxia Technology Co., Ltd.](https://appshunter.io/developer/432274383) | [China Academy of Art Film and Media Co., Ltd.](https://appshunter.io/developer/1708514815) |

## What reviewers say

### 知乎

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

**Currently charting:** #147 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


### 洞天艺术

[App page](https://appshunter.io/ios/app/id6467347041)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 数字确权服务 | $1.99 | one-time |


## Frequently asked questions

### Is 知乎 free?

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

### Is 洞天艺术 free?

洞天艺术 is free to download, with in-app purchases available.

### Do 知乎 or 洞天艺术 have ads?

知乎 shows ads; 洞天艺术 does not.

### Which is updated more often, 知乎 or 洞天艺术?

知乎 ships an update weekly, and 洞天艺术 fortnightly. Most recently, 知乎 was updated on October 23, 2026 and 洞天艺术 on October 11, 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.*