# 司空 vs Ai 绘画

The clearest difference is iOS requirement: Ai 绘画 at 13.0 against 司空's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 司空 sells 4 one-off in-app purchases and Ai 绘画 sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

司空 ships an update every 3 weeks, Ai 绘画 fortnightly. The most recent releases landed on October 18, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 司空 | Ai 绘画 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/ai/id6447472220/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 71 MB | 92 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Zhejiang Qmake Information Technology Co.,Ltd](https://appshunter.io/developer/1450462647) | [琼 程](https://appshunter.io/developer/1679300266) |

## What reviewers say

### 司空

[App page](https://appshunter.io/ios/app/id1450464065)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 司空1个月会员 | $0.99 | one-time |
| 司空3个月会员 | $3.99 | one-time |
| 司空季度会员 | $9.99 | one-time |
| 司空12个月会员 | $14.99 | one-time |


### Ai 绘画

[App page](https://appshunter.io/ios/app/ai/id6447472220)

This app helps designers of all levels bring their creative visions to life. Quickly transform sketches and basic elements into stunning artwork in seconds, enhancing creativity across various design fields. It's a powerful tool for professionals, beginners, educators, and students alike.

**Highlights:** AI-powered art generation, Sketch to image conversion, Supports industrial, product, architectural, fashion, and graphic design, 3D model and rendering creation, Import and edit existing designs, Game and anime art creation

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| vip月卡 | $9.99 | per month |
| vip年卡 | $39.99 | per year |


## Frequently asked questions

### Is 司空 free?

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

### Is Ai 绘画 free?

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

### Do 司空 or Ai 绘画 have ads?

Neither 司空 nor Ai 绘画 shows ads.

### Which is updated more often, 司空 or Ai 绘画?

司空 ships an update every 3 weeks, and Ai 绘画 fortnightly. Most recently, 司空 was updated on October 18, 2026 and Ai 绘画 on October 21, 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.*