DEVI Smart vs UniFi Access
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DEVI Smart
This app allows wireless control of electric floor heating systems via a mobile device. It offers remote adjustment, scheduling, and energy-saving features for multiple thermostats and locations, with secure cloud connectivity.
- Wireless control of electric floor heating
- Remote adjustment from anywhere
- Energy-saving scheduling
- Control multiple thermostats and locations
- Local operation without internet
- Frost protection and vacation settings
- Secure cloud connection
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DEVIsmart™ application provides its users with possibility to wireless control of electric floor heating systems equipped with DEVIreg™ Smart thermostat. The app turns your mobile device into an intuitive floor heating remote control. With new DEVIsmart™ App you can control as many DEVIreg™ Smart thermostats and locations as you choose. Safe and private cloud connection The Mobile app control communicates through a safe cloud system based on the same security that is used in mobile banking applications. No data is stored in the cloud and your personal information is secure at all times. Adjust your floor heating from your smartphone Adjust home heating easily and intuitively with the remote control you know the best – via the internet. If the internet goes down, you can still operate locally without internet connection. Schedule your home heating and save energy Control all your thermostats in multiple locations The new Danfoss mobile app lets you stay in control and operate all your thermostats in multiple locations from one single point of access. Reduce energy costs Smart app features let you schedule your floor heating system to fit your rhythm and reduce energy costs. The DEVIreg™ Smart thermostat even adapts to climatic conditions and learns when to start and shut off heating. Save energy by following your scheduled heating demands and automatically lowering the temperature when you do not need it. Easily set the temperature to fit your rhythm and enjoy superior thermal comfort. DEVIsmart™ App features: • Adjust home heating from anywhere in the world • Set up/operate floor heating locally without internet connection • Use living zone to easy control the most used thermostats • Control thermostats in multiple locations (e.g. holiday home) • Frost protection, weekly schedule, away/vacation settings, and economy mode • Receive notifications/warnings about important system events • Access dedicated support and troubleshooting directly from the app • Secure wireless communication through a safe cloud system based on the same security that is used in mobile banking applications. No data is stored in the cloud and your customers’ personal information is secure at all times.
UniFi Access
Manage your entire access control system remotely. Oversee doors, users, readers, and security policies. View real-time activity logs and receive doorbell notifications.
- Manage connected doors and security policies
- Oversee user rosters and access methods
- Configure reader devices and greeting messages
- View real-time access event logs
- Receive doorbell notifications
- Grant remote access to visitors
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The UniFi Access mobile app is a convenient, comprehensive management tool that allows you and other administrators to oversee every aspect of your Access system, including connected doors, user rosters, reader devices, access cards, and security policies. With the app, you can also view real-time access event logs to maintain full vantage of visitor and employee traffic throughout your workspace. [Doorbell] Receive a push notification when someone rings a connected doorbell. [Remote View] Greet visitors remotely with the UA Pro, then grant them access remotely. [Devices] Add new Access devices and configure a variety of settings, including greeting messages, broadcast names, digital keypad layout, volume, and display brightness. [Doors] Manage individual doors or group them to instantly make sweeping security alterations on the fly. You can also apply door and floor-specific access policies for enhanced building security. [Users] Add, edit, and remove users with ease. You can also assign individual and group-level access methods, such as PIN codes or UA Cards. [Activities] Review detailed access logs and card reader video captures to track on-premises activity anywhere, anytime. [Cards] Utilize existing NFC cards or assign new UA Cards to system users.
Screenshots
Verdict
The clearest difference is review sentiment: UniFi Access at 60% against DEVI Smart's 14%. UniFi Access also leads on rating (4.9 vs 2.0) and update cadence (every 2 weeks vs every 4 months). DEVI Smart's advantage is iOS requirement (11.0 vs 17.0). 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.
UniFi Access holds the better App Store score, 4.9 against 2.0. That said, the two scores are not equally well evidenced: UniFi Access has 4.6K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 14% of DEVI Smart's written reviews are positive against 60% of UniFi Access's.
DEVI Smart ships an update every 4 months, UniFi Access every 2 weeks. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.
| Parameter | DEVI Smart | UniFi Access |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (6 ratings) | 4.9 (4.6K ratings) — better |
| Positive reviews | 13.9% of reviews | 59.8% of reviews — better |
| Number of ratings | 6 | 4.6K — better |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 77 MB | 280 MB |
| Age rating | 4+ | 4+ |
| Developer | Danfoss A/S | Ubiquiti Inc. |
Customer experience
DEVI Smart
UniFi Access
Bugs and requests
DEVI Smart
Not enough reviews yet to summarise bugs or requests.
UniFi Access
Reported bugs
4 issues- App crashes on launch
- Notifications not working
- Remote login issues
- Outdated information in app
Requested features
4 requests- Integrate with Unifi Protect
- Add schedule management in app
- Allow door hold open/timer controls
- Improve camera/intercom integration
In-app purchases
DEVI Smart
No in-app purchases
UniFi Access
No in-app purchases





