# Aroma IoT vs ScentSys

The clearest difference is rating: Aroma IoT at 1.7 against ScentSys's 1.0. Aroma IoT also leads on ratings volume (21 vs 1). ScentSys's advantage is update cadence (weekly vs every 2 months). On price, ads, in-app purchases and monetization model 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 holds the better App Store score, 1.7 against 1.0. That said, the two scores are not equally well evidenced: Aroma IoT has 21 ratings behind it against 1, so its average is the more settled of the two.

Aroma IoT ships an update every 2 months, ScentSys weekly. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Aroma IoT | ScentSys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (21 ratings)](https://appshunter.io/ios/app/aroma-iot/id1479180534/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/scentsys/id6739991613/reviews) |
| Number of ratings | **21** | 1 |
| Positive reviews | 18.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | Free |
| Size | 27 MB | 37 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [建美 王](https://appshunter.io/developer/1479180533) | [秦庚 蒋](https://appshunter.io/developer/1436462643) |

## 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


### ScentSys

[App page](https://appshunter.io/ios/app/scentsys/id6739991613)

Control and monitor your aroma diffuser remotely. Receive fault alerts and manage multiple users with device authorization. Define custom operating times and create device groups for batch control.

**Highlights:** Remote diffuser operation, Status monitoring, Fault alerts, Multi-user management, Custom operation times, Device group creation

**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 ScentSys free?

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

### Which has better reviews, Aroma IoT or ScentSys?

Aroma IoT is rated higher. Aroma IoT averages 1.7 out of 5 from 21 ratings, while ScentSys averages 1.0 from 1 ratings.

### Do Aroma IoT or ScentSys have ads?

Neither Aroma IoT nor ScentSys shows ads.

### Which is updated more often, Aroma IoT or ScentSys?

Aroma IoT ships an update every 2 months, and ScentSys weekly. Most recently, Aroma IoT was updated on November 3, 2026 and ScentSys on November 12, 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.*