# Smart Diffuser vs Aroma Butler

The clearest difference is rating: Smart Diffuser at 2.3 against Aroma Butler's 1.0. Smart Diffuser also leads on review sentiment (25% vs 0%) and update cadence (every 6 weeks vs every 3 months). On price, ratings volume, ads and in-app purchases 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, 2.3 against 1.0. Both are backed by a comparable volume of ratings — 8 and 10 respectively. Written reviews point the same way: 25% of Smart Diffuser's written reviews are positive against 0% of Aroma Butler's.

Smart Diffuser ships an update every 6 weeks, Aroma Butler every 3 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Smart Diffuser | Aroma Butler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (8 ratings)](https://appshunter.io/ios/app/smart-diffuser/id1436466932/reviews)** | [1.0 (10 ratings)](https://appshunter.io/ios/app/aroma-butler/id1533033484/reviews) |
| Number of ratings | 8 | **10** |
| Positive reviews | **25.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 42 MB | 40 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [秦庚 蒋](https://appshunter.io/developer/1436462643) | [Guangzhou You'an Information Technology Co.,Ltd](https://appshunter.io/developer/1092018980) |

## 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


### Aroma Butler

[App page](https://appshunter.io/ios/app/aroma-butler/id1533033484)

Control your home appliances remotely, share access with family, and integrate with smart speakers for voice commands. Receive notifications for equipment failures to stay informed.

**Highlights:** Remote appliance control, Device sharing with family, Smart speaker voice integration, Equipment failure notifications

**In-app purchases:** none


## Frequently asked questions

### Is Smart Diffuser free?

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

### Is Aroma Butler free?

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

### Which has better reviews, Smart Diffuser or Aroma Butler?

Smart Diffuser is rated higher. Smart Diffuser averages 2.3 out of 5 from 8 ratings, while Aroma Butler averages 1.0 from 10 ratings.

### Do Smart Diffuser or Aroma Butler have ads?

Neither Smart Diffuser nor Aroma Butler shows ads.

### Which is updated more often, Smart Diffuser or Aroma Butler?

Smart Diffuser ships an update every 6 weeks, and Aroma Butler every 3 months. Most recently, Smart Diffuser was updated on October 29, 2026 and Aroma Butler on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*