# CDAS vs AI记录仪

The clearest difference is update cadence: AI记录仪 at every 3 weeks against CDAS's every 3 months. CDAS's advantage is iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CDAS ships an update every 3 months, AI记录仪 every 3 weeks. The most recent releases landed on September 15, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | CDAS | AI记录仪 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 185 MB | 34 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nebula Link Technology Group Co., Ltd.](https://appshunter.io/developer/1100580362) | [Shenzhen Mapgoo Technology Co., Ltd.](https://appshunter.io/developer/581135733) |

## What reviewers say

### CDAS

[App page](https://appshunter.io/ios/app/cdas/id1536370528)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI记录仪

[App page](https://appshunter.io/ios/app/ai/id6762422312)

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

**In-app purchases:** none


## Frequently asked questions

### Is CDAS free?

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

### Is AI记录仪 free?

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

### Do CDAS or AI记录仪 have ads?

Neither CDAS nor AI记录仪 shows ads.

### Which is updated more often, CDAS or AI记录仪?

CDAS ships an update every 3 months, and AI记录仪 every 3 weeks. Most recently, CDAS was updated on September 15, 2026 and AI记录仪 on May 16, 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.*