# Smart Diffuser vs SMART_AROMA

The clearest difference is review sentiment: SMART_AROMA at 100% against Smart Diffuser's 25%. SMART_AROMA also leads on update cadence (every 8 days vs every 6 weeks) and rating (3.0 vs 2.7). Smart Diffuser's advantage is ratings volume (6 vs 2). 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_AROMA holds the better App Store score, 3.0 against 2.7. 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 100% of SMART_AROMA's.

Smart Diffuser ships an update every 6 weeks, SMART_AROMA every 8 days. The most recent releases landed on July 7, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Smart Diffuser | SMART_AROMA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (6 ratings)](https://appshunter.io/ios/app/smart-diffuser/id1436466932/reviews) | **[3.0 (2 ratings)](https://appshunter.io/ios/app/smart-aroma/id1627724129/reviews)** |
| Number of ratings | **6** | 2 |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 8 days** |
| Monetization | Free | Free |
| Size | 42 MB | 32 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [秦庚 蒋](https://appshunter.io/developer/1436462643) | [萍萍 刘](https://appshunter.io/developer/1626043006) |

## 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_AROMA

[App page](https://appshunter.io/ios/app/smart-aroma/id1627724129)

Manage your smart fragrance device remotely using your smartphone. Adjust fan speed, set fragrance intensity, and customize device settings without needing an internet connection.

**Highlights:** Device search and add, Rename and remark devices, Adjust fan wind/power, Set fragrance density, Password protection

**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_AROMA free?

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

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

SMART_AROMA is rated higher. Smart Diffuser averages 2.7 out of 5 from 6 ratings, while SMART_AROMA averages 3.0 from 2 ratings.

### Do Smart Diffuser or SMART_AROMA have ads?

Neither Smart Diffuser nor SMART_AROMA shows ads.

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

Smart Diffuser ships an update every 6 weeks, and SMART_AROMA every 8 days. Most recently, Smart Diffuser was updated on July 7, 2026 and SMART_AROMA on September 13, 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.*