# ScentSmart vs IDIFFUSER

The clearest difference is update cadence: IDIFFUSER at every 3 weeks against ScentSmart's every 4 months. ScentSmart's advantage is iOS requirement (12.0 vs 15.5). 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.

ScentSmart ships an update every 4 months, IDIFFUSER every 3 weeks. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | ScentSmart | IDIFFUSER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/idiffuser/id6475340846/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 59 MB | 78 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杭州隐迹环境科技有限公司](https://appshunter.io/developer/1611705274) | [Suzhou RAMOND Aroma Technology Co.,LTD](https://appshunter.io/developer/1723987011) |

## What reviewers say

### ScentSmart

[App page](https://appshunter.io/ios/app/scentsmart/id1611705272)

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

**In-app purchases:** none


### IDIFFUSER

[App page](https://appshunter.io/ios/app/idiffuser/id6475340846)

Manage your space environment with this intelligent IoT platform. Remotely monitor, control, and interact with connected smart devices for a healthier and more quality life. Offers scene management and ultra-remote capabilities.

**Highlights:** Remote monitoring, Remote control, Equipment management, Interactive communication, Scene management, Ultra-remote capabilities

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ScentSmart free?

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

### Is IDIFFUSER free?

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

### Do ScentSmart or IDIFFUSER have ads?

Neither ScentSmart nor IDIFFUSER shows ads.

### Which is updated more often, ScentSmart or IDIFFUSER?

ScentSmart ships an update every 4 months, and IDIFFUSER every 3 weeks. Most recently, ScentSmart was updated on September 25, 2026 and IDIFFUSER on September 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*