# 专注欣 vs IAi3D

专注欣 and IAi3D are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | 专注欣 | IAi3D |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 165 MB | 369 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [BrainCo Inc](https://appshunter.io/developer/1148192149) | [上海吾是吾文化科技有限公司](https://appshunter.io/developer/1801164621) |

## What reviewers say

### 专注欣

[App page](https://appshunter.io/ios/app/id6449087205)

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

**In-app purchases:** none


### IAi3D

[App page](https://appshunter.io/ios/app/iai3d/id6743077440)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 专注欣 free?

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

### Is IAi3D free?

IAi3D is free to download, with no in-app purchases.

### Do 专注欣 or IAi3D have ads?

Neither 专注欣 nor IAi3D shows ads.

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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.*