# ScentSetter vs Smart Diffuser

The clearest difference is update cadence: Smart Diffuser at every 6 weeks against ScentSetter's every 17 months. ScentSetter's advantage is review sentiment (33% vs 25%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 2.8 for ScentSetter against 2.7 for Smart Diffuser. Both are backed by a comparable volume of ratings — 8 and 6 respectively. Written reviews are what separate them: 33% of ScentSetter's written reviews are positive against 25% of Smart Diffuser's.

ScentSetter ships an update every 17 months, Smart Diffuser every 6 weeks. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | ScentSetter | Smart Diffuser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (8 ratings)](https://appshunter.io/ios/app/scentsetter/id1424881963/reviews)** | [2.7 (6 ratings)](https://appshunter.io/ios/app/smart-diffuser/id1436466932/reviews) |
| Number of ratings | **8** | 6 |
| Positive reviews | **33.3% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 2 MB | 42 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AIR SCENT](https://appshunter.io/developer/1289531217) | [秦庚 蒋](https://appshunter.io/developer/1436462643) |

## What reviewers say

### ScentSetter

[App page](https://appshunter.io/ios/app/scentsetter/id1424881963)

Control cold mist nebulizing scent marketing and odor control devices. Set intensity and schedule diffusion times daily. Create custom operating profiles and secure devices with passwords.

**Highlights:** Set diffusion intensity, Schedule functional duration, Create operating profiles, Set device passwords, Manage scent marketing devices

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart Diffuser

[App page](https://appshunter.io/ios/app/smart-diffuser/id1436466932)

Control your smart scent machine remotely via Wi-Fi. Adjust scent intensity, monitor oil levels, and manage multiple devices. Authorize other users and group machines for business use.

**Highlights:** Remote Wi-Fi control, Scent intensity adjustment, Oil level monitoring, User authorization, Device grouping, Employee account management

**In-app purchases:** none


## Frequently asked questions

### Is ScentSetter free?

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

### Is Smart Diffuser free?

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

### Which has better reviews, ScentSetter or Smart Diffuser?

ScentSetter is rated higher. ScentSetter averages 2.8 out of 5 from 8 ratings, while Smart Diffuser averages 2.7 from 6 ratings.

### Do ScentSetter or Smart Diffuser have ads?

Neither ScentSetter nor Smart Diffuser shows ads.

### Which is updated more often, ScentSetter or Smart Diffuser?

ScentSetter ships an update every 17 months, and Smart Diffuser every 6 weeks. Most recently, ScentSetter was updated on October 3, 2026 and Smart 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.*