# Smart Diffuser vs Smart fragrance

The clearest difference is rating: Smart Diffuser at 2.7 against Smart fragrance's 1.0. Smart Diffuser also leads on review sentiment (25% vs 0%) and ratings volume (6 vs 2). Smart fragrance's advantage is update cadence (every 2 weeks vs every 6 weeks) and iOS requirement (9.0 vs 12.0). 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 Diffuser holds the better App Store score, 2.7 against 1.0. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews point the same way: 25% of Smart Diffuser's written reviews are positive against 0% of Smart fragrance's.

Smart Diffuser ships an update every 6 weeks, Smart fragrance every 2 weeks. Both last shipped on October 2, 2026.

## The numbers

| Metric | Smart Diffuser | Smart fragrance |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (6 ratings)](https://appshunter.io/ios/app/smart-diffuser/id1436466932/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/smart-fragrance/id6446395465/reviews) |
| Number of ratings | **6** | 2 |
| Positive reviews | **25.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 42 MB | 35 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [秦庚 蒋](https://appshunter.io/developer/1436462643) | [Hangzhou GreenAir Environmental Protection Technology Co., Ltd](https://appshunter.io/developer/1154398110) |

## 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 fragrance

[App page](https://appshunter.io/ios/app/smart-fragrance/id6446395465)

Control external fragrance devices remotely via WiFi or Bluetooth. Schedule on/off times for convenient operation, whether at home or away. Offers a stable and simple connection for managing your home's scent.

**Highlights:** Remote device control, WiFi and Bluetooth connectivity, Scheduling for on/off times, Device binding and scanning, Stable connection

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smart Diffuser free?

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

### Is Smart fragrance free?

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

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

Smart Diffuser is rated higher. Smart Diffuser averages 2.7 out of 5 from 6 ratings, while Smart fragrance averages 1.0 from 2 ratings.

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

Neither Smart Diffuser nor Smart fragrance shows ads.

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

Smart Diffuser ships an update every 6 weeks, and Smart fragrance every 2 weeks. Most recently, Smart Diffuser was updated on October 2, 2026 and Smart fragrance 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.*