# Smart Diffuser vs Smart Scent

The clearest difference is rating: Smart Scent at 4.7 against Smart Diffuser's 2.7. Smart Scent also leads on ratings volume (51 vs 6) and iOS requirement (10.0 vs 12.0). Smart Diffuser's advantage is update cadence (every 6 weeks vs every 5 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.

Smart Scent holds the better App Store score, 4.7 against 2.7. That said, the two scores are not equally well evidenced: Smart Scent has 51 ratings behind it against 6, so its average is the more settled of the two.

Smart Diffuser ships an update every 6 weeks, Smart Scent every 5 months. The most recent releases landed on October 2, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Smart Diffuser | Smart Scent |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (6 ratings)](https://appshunter.io/ios/app/smart-diffuser/id1436466932/reviews) | **[4.7 (51 ratings)](https://appshunter.io/ios/app/smart-scent/id1444842459/reviews)** |
| Number of ratings | 6 | **51** |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | Free | Free |
| Size | 42 MB | 136 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [秦庚 蒋](https://appshunter.io/developer/1436462643) | [永锦 罗](https://appshunter.io/developer/1444842458) |

## What reviewers say

### 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


### Smart Scent

[App page](https://appshunter.io/ios/app/smart-scent/id1444842459)

Control your smart fragrance device remotely, set schedules, and manage multiple devices from one app. Share access with family to enjoy a personalized scent experience.

**Highlights:** Remote device control, Power saving features, Multi-device management, Timed task scheduling, Device sharing, Fast networking

**In-app purchases:** none


## Frequently asked questions

### Is Smart Diffuser free?

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

### Is Smart Scent free?

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

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

Smart Scent is rated higher. Smart Diffuser averages 2.7 out of 5 from 6 ratings, while Smart Scent averages 4.7 from 51 ratings.

### Do Smart Diffuser or Smart Scent have ads?

Neither Smart Diffuser nor Smart Scent shows ads.

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

Smart Diffuser ships an update every 6 weeks, and Smart Scent every 5 months. Most recently, Smart Diffuser was updated on October 2, 2026 and Smart Scent on June 1, 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.*