Smart Diffuser vs Aroma
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Smart Diffuser
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.
- Remote Wi-Fi control
- Scent intensity adjustment
- Oil level monitoring
- User authorization
- Device grouping
- Employee account management
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Smart scent machine app is to control the scent machine remotely Main function as below; 1. SMARTCONFIG: To match your scent machine to your wifi and control by the smartphone. 2. Do settings and ambient scent intensity control remotely. 3. Oil Monitor: Can monitor the oil level of the scent machine. 4. Authorization: To authorize the person that need to do setting. 5. Group function: Can group your customer's machine. 6.Employee account function：Resolve equipment ownership issues between agents and employees . 7.Update the prompt function：APP has a new version that will prompt the update.
Aroma
Control and manage various air treatment devices remotely via a cloud platform. Supports multiple communication methods and devices, offering data statistics and enhanced information security for businesses.
- Remote device control
- Multi-communication support (Bluetooth, WiFi, 2G/4G)
- Data statistics and analysis
- Information security
- Hardware integration for various equipment
- Cross-platform compatibility (mobile & PC)
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Aromoa link is an Internet of things control platform for air treatment, odor treatment, fragrance marketing, sterilization and sterilization. This platform is the first cloud control product in the world that can support Bluetooth, WiFi, 2G / 4G and cellular communication, and also the first platform that is compatible with mobile and PC terminals to realize control, management and data statistics. Aroma link is a self built server and independently developed cloud control platform. Not limited by the framework of the third-party cloud platform, it fully ensures the information security of the platform, user-defined data collection and analysis. Finally, the platform supports hardware access to kill equipment, fragrance equipment, other spray and processing equipment, and provides more market prospects for the upgrading and upgrading of subsequent product lines.
Screenshots
Verdict
The clearest difference is rating: Smart Diffuser at 2.7 against Aroma's 1.7. Smart Diffuser also leads on review sentiment (25% vs 10%). Aroma's advantage is ratings volume (122 vs 6) and update cadence (every 2 weeks vs every 6 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 1.7. That said, the two scores are not equally well evidenced: Aroma has 122 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 25% of Smart Diffuser's written reviews are positive against 10% of Aroma's.
Smart Diffuser ships an update every 6 weeks, Aroma every 2 weeks. The most recent releases landed on July 7, 2026 and September 22, 2026 respectively.
| Parameter | Smart Diffuser | Aroma |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (6 ratings) — better | 1.7 (122 ratings) |
| Positive reviews | 25.0% of reviews — better | 10.0% of reviews |
| Number of ratings | 6 | 122 — better |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 42 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | 秦庚 蒋 | 可汗 罗 |
Customer experience
Smart Diffuser
Aroma
Bugs and requests
Smart Diffuser
Not enough reviews yet to summarise bugs or requests.
Aroma
Reported bugs
51 issues- Device does not turn on
- Bluetooth connection is weak or lost
- WiFi connection is unstable or unavailable
- App does not save settings or schedules
- App reverts to factory settings
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- Incorrect error messages regarding start and end times
- App is incompatible with newer iPhone versions
- App does not allow account creation
- Bluetooth password issues (wrong password, forgotten password)
- App does not find devices after initial setup or adding new devices
- WiFi functionality removed
- Schedule settings not saving correctly (e.g., only showing Sunday)
- App not displaying pair code for Bluetooth
- App not allowing login after registration
- Error messages when trying to edit schedules
- Device shows low battery even when fully charged
- App not syncing with devices
- Day of the week not editable in schedule settings
- Machine reverts to factory settings after app changes
- App not showing devices and reporting no network found
- App not allowing sign-in after reinstallation
- Device does not display 'pair code' for Bluetooth
- App asks for Bluetooth password that is not provided or cannot be set
- Cannot get past password set for Bluetooth connection
- App does not recognize home Wi-Fi network
- Bluetooth settings forgotten when phone moves away from machine
- App does not save settings or schedule
- Day of the week should be editable with time and w/p settings
- Settings with machine and app don’t hold
- App not showing devices and not giving a way to add them
- WiFi keeps going offline status on the app
- App does not display 'pair code' for Bluetooth
- App asks for Bluetooth password that is not provided or cannot be set
- Cannot get past password set for Bluetooth connection
- App does not recognize home Wi-Fi network
- Bluetooth settings forgotten when phone moves away from machine
- App does not save settings or schedule
- Day of the week should be editable with time and w/p settings
- Settings with machine and app don’t hold
- App not showing devices and not giving a way to add them
- WiFi keeps going offline status on the app
- App does not display 'pair code' for Bluetooth
- App asks for Bluetooth password that is not provided or cannot be set
- Cannot get past password set for Bluetooth connection
- App does not recognize home Wi-Fi network
- Bluetooth settings forgotten when phone moves away from machine
- App does not save settings or schedule
- Day of the week should be editable with time and w/p settings
- Settings with machine and app don’t hold
- App not showing devices and not giving a way to add them
- WiFi keeps going offline status on the app
Requested features
5 requests- Add more time schedules
- Increase pause limit for schedules
- Add ability to edit day of the week in schedule
- Add more working periods
- Allow programming for the whole week with multiple options
In-app purchases
Smart Diffuser
No in-app purchases
Aroma
No in-app purchases
