# Smart Scent Air vs AI~Diffuser

Smart Scent Air and AI~Diffuser are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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.

Smart Scent Air ships an update every 2 months, AI~Diffuser every 3 months. Both last shipped on October 2, 2026.

## The numbers

| Metric | Smart Scent Air | AI~Diffuser |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 37 MB | 58 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [易客创新(泉州)智能科技有限公司](https://appshunter.io/developer/1683294855) | [Guangzhou Lanmei Computer Technology Co., Ltd.](https://appshunter.io/developer/989104097) |

## What reviewers say

### Smart Scent Air

[App page](https://appshunter.io/ios/app/smart-scent-air/id1668710074)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI~Diffuser

[App page](https://appshunter.io/ios/app/aidiffuser/id6757913113)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart Scent Air free?

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

### Is AI~Diffuser free?

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

### Do Smart Scent Air or AI~Diffuser have ads?

Neither Smart Scent Air nor AI~Diffuser shows ads.

### Which is updated more often, Smart Scent Air or AI~Diffuser?

Smart Scent Air ships an update every 2 months, and AI~Diffuser every 3 months. Most recently, Smart Scent Air was updated on October 2, 2026 and AI~Diffuser on October 2, 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.*