Smart Diffuser vs 3i
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.
3i
Easily connect and control your smart devices from your mobile phone. Manage settings, schedule tasks, and monitor device status remotely. Enjoy firmware updates and share device access with family.
- Remote control and setup
- Real-time status view
- Schedule automated tasks
- Do not disturb mode
- Firmware upgrades
- Share device access
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3i App is an application that connects 3i's smart products. With 3i App, you can quickly and easily connect your mobile phone with 3i's smart products. With 3i App, you can use the following functions. 【Remote Control】Remote control and setup your device anytime, anywhere. 【Status View】Check the working status of the device in real time. 【Setting Appointment】Set up regular cleaning tasks and start working automatically. 【Do Not Disturb Mode】Set the do not disturb time, the device will not disturb your rest. 【Firmware Upgrade】Get the function update, enjoy a better smart life. 【Share the device with your family and friends. 【Contact Us】We are looking forward to your praise and criticism! Official website: https://www.3itech.com/
Screenshots
Verdict
The clearest difference is review sentiment: 3i at 72% against Smart Diffuser's 25%. 3i also leads on rating (4.9 vs 2.7) and ratings volume (333 vs 6). 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.
3i holds the better App Store score, 4.9 against 2.7. That said, the two scores are not equally well evidenced: 3i has 333 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 72% of 3i's.
Smart Diffuser ships an update every 6 weeks, 3i every 11 days. The most recent releases landed on July 7, 2026 and September 19, 2026 respectively.
| Parameter | Smart Diffuser | 3i |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (6 ratings) | 4.9 (333 ratings) — better |
| Positive reviews | 25.0% of reviews | 72.2% of reviews — better |
| Number of ratings | 6 | 333 — better |
| Update frequency | Every 6 weeks | Every 11 days — 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 | 279 MB |
| Age rating | 4+ | 4+ |
| Developer | 秦庚 蒋 | 深圳市杉川智能科技有限公司 |
Customer experience
Smart Diffuser
3i
In-app purchases
Smart Diffuser
No in-app purchases
3i
No in-app purchases
