# AI CAD vs 知我 AI

The clearest difference is in-app purchases: 知我 AI at none against AI CAD's 4. AI CAD's advantage is update cadence (weekly vs every 2 weeks) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. AI CAD sells 4 one-off in-app purchases. 知我 AI asks for nothing beyond the download.

AI CAD ships an update weekly, 知我 AI every 2 weeks. Both last shipped on October 8, 2026.

## The numbers

| Metric | AI CAD | 知我 AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 49 MB | 3 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hubei Ai Qiang Artificial Intelligence Technology Co. Ltd](https://appshunter.io/developer/1896704442) | [杰栋 何](https://appshunter.io/developer/1896629335) |

## What reviewers say

### AI CAD

[App page](https://appshunter.io/ios/app/ai-cad/id6769966978)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 AI CAD Credits | $1.99 | one-time |
| 330 AI CAD Credits | $5.99 | one-time |
| 600 AI CAD Credits | $9.99 | one-time |
| 1300 AI CAD Credits | $19.99 | one-time |


### 知我 AI

[App page](https://appshunter.io/ios/app/ai/id6780978880)

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

**In-app purchases:** none


## Frequently asked questions

### Is AI CAD free?

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

### Is 知我 AI free?

知我 AI is free to download, with no in-app purchases.

### Do AI CAD or 知我 AI have ads?

Neither AI CAD nor 知我 AI shows ads.

### Which is updated more often, AI CAD or 知我 AI?

AI CAD ships an update weekly, and 知我 AI every 2 weeks. Most recently, AI CAD was updated on October 8, 2026 and 知我 AI on October 8, 2026.

---

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