# Scent Machine vs Aroma Asst

The clearest difference is update cadence: Aroma Asst 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.

Scent Machine ships an update every 5 months, Aroma Asst every 2 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Scent Machine | Aroma Asst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/aroma-asst/id6758644791/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 26 MB | 35 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Lanmei Computer Technology Co., Ltd.](https://appshunter.io/developer/989104097) | [兵 姚](https://appshunter.io/developer/1546606210) |

## What reviewers say

### Scent Machine

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Aroma Asst

[App page](https://appshunter.io/ios/app/aroma-asst/id6758644791)

This intelligent application allows for real-time monitoring and control of fragrance diffusion devices. Users can customize working modes, set schedules, and manage device sharing with controlled authorities for a fully automated scent experience.

**Highlights:** Real-time equipment monitoring, Customizable working modes, Scheduled scene activation, Oil quantity and flavor tracking, Equipment sharing with authority control

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

**In-app purchases:** none


## Frequently asked questions

### Is Scent Machine free?

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

### Is Aroma Asst free?

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

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

Neither Scent Machine nor Aroma Asst shows ads.

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

Scent Machine ships an update every 5 months, and Aroma Asst every 2 months. Most recently, Scent Machine was updated on October 30, 2026 and Aroma Asst on October 31, 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.*