# 零维宇宙 vs Scent Expert

The clearest difference is in-app purchases: Scent Expert at none against 零维宇宙's 1. Scent Expert also leads on device support. On price and iOS requirement there is nothing between them.

Both are free to download. 零维宇宙 sells 1 in-app purchase, starting at $3.99 per month. Scent Expert asks for nothing beyond the download.

## The numbers

| Metric | 零维宇宙 | Scent Expert |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | — | Every 6 months |
| Size | 73 MB | 182 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ShangHai ArgonStar Tech Co., Ltd.](https://appshunter.io/developer/1700799358) | [静康 麦](https://appshunter.io/developer/1709029897) |

## What reviewers say

### 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 |


### Scent Expert

[App page](https://appshunter.io/ios/app/scent-expert/id6477283518)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 零维宇宙 free?

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

### Is Scent Expert free?

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

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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.*