# Aroma IoT vs Scent Machine

The clearest difference is update cadence: Aroma IoT at every 2 months against Scent Machine's every 5 months. Scent Machine's advantage is iOS requirement (9.0 vs 15.0). 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.

Aroma IoT ships an update every 2 months, Scent Machine every 5 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Aroma IoT | Scent Machine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (20 ratings)](https://appshunter.io/ios/app/aroma-iot/id1479180534/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 18.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | — |
| Size | 27 MB | 26 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [建美 王](https://appshunter.io/developer/1479180533) | [Guangzhou Lanmei Computer Technology Co., Ltd.](https://appshunter.io/developer/989104097) |

## What reviewers say

### Aroma IoT

[App page](https://appshunter.io/ios/app/aroma-iot/id1479180534)

Control smart fragrance devices remotely via WiFi or mobile network. Manage device settings, view maintenance history, and group devices for efficient management. Offers authorization and employee management features.

**Highlights:** Remote device control, Network configuration, Maintenance records, Group management, Authorization management, Employee management, Intelligent search and sorting

**In-app purchases:** none


### Scent Machine

[App page](https://appshunter.io/ios/app/scent-machine/id6740234000)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Aroma IoT free?

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

### Is Scent Machine free?

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

### Do Aroma IoT or Scent Machine have ads?

Neither Aroma IoT nor Scent Machine shows ads.

### Which is updated more often, Aroma IoT or Scent Machine?

Aroma IoT ships an update every 2 months, and Scent Machine every 5 months. Most recently, Aroma IoT was updated on October 24, 2026 and Scent Machine on October 16, 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.*