# 智能问答 vs 零维宇宙

The clearest difference is device support: 智能问答 at 2 against 零维宇宙's —. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. 智能问答 sells 3 in-app purchases, starting at $3.99 per month and 零维宇宙 sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 智能问答 | 零维宇宙 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Every 4 months | — |
| Size | 11 MB | 73 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 17+ | 4+ |
| Developer | [志鹏 吴](https://appshunter.io/developer/1638689858) | [ShangHai ArgonStar Tech Co., Ltd.](https://appshunter.io/developer/1700799358) |

## What reviewers say

### 智能问答

[App page](https://appshunter.io/ios/app/id6448619183)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| month | $3.99 | per month |
| year | $12.99 | per year |
| permanent | $29.99 | one-time |


### 零维宇宙

[App page](https://appshunter.io/ios/app/ai/id6457204291)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus | $3.99 | per month |


## Frequently asked questions

### Is 智能问答 free?

智能问答 is free to download, with in-app purchases available.

### Is 零维宇宙 free?

零维宇宙 is free to download, with in-app purchases available.

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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.*