# Smart Diffuser vs Scentist

The clearest difference is rating: Smart Diffuser at 2.7 against Scentist's 1.5. Smart Diffuser also leads on update cadence (every 6 weeks vs every 3 months). On price, review sentiment, 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.

Smart Diffuser holds the better App Store score, 2.7 against 1.5. Both are backed by a comparable volume of ratings — 6 and 11 respectively. Written reviews point the same way: 25% of Smart Diffuser's written reviews are positive against 20% of Scentist's.

Smart Diffuser ships an update every 6 weeks, Scentist every 3 months. The most recent releases landed on October 2, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Smart Diffuser | Scentist |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (6 ratings)](https://appshunter.io/ios/app/smart-diffuser/id1436466932/reviews)** | [1.5 (11 ratings)](https://appshunter.io/ios/app/scentist/id6443780450/reviews) |
| Number of ratings | 6 | **11** |
| Positive reviews | **25.0% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 42 MB | 30 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [秦庚 蒋](https://appshunter.io/developer/1436462643) | [志涛 侯](https://appshunter.io/developer/1739246959) |

## 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


### Scentist

[App page](https://appshunter.io/ios/app/scentist/id6443780450)

Control your intelligent scent machine with this app. Set working times, fragrance concentration, and schedule auto on/off functions. You can also restore factory settings and access device instructions.

**Highlights:** Set working time and date, Adjust fragrance concentration, Auto on and off scheduling, Restore factory settings, View device instructions

**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 Scentist free?

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

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

Smart Diffuser is rated higher. Smart Diffuser averages 2.7 out of 5 from 6 ratings, while Scentist averages 1.5 from 11 ratings.

### Do Smart Diffuser or Scentist have ads?

Neither Smart Diffuser nor Scentist shows ads.

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

Smart Diffuser ships an update every 6 weeks, and Scentist every 3 months. Most recently, Smart Diffuser was updated on October 2, 2026 and Scentist on September 23, 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.*