Duux vs MathBell
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Duux
Manage your Duux air treatment devices remotely for a healthier living environment. Monitor air quality, schedule operations, and adjust settings from anywhere with an intuitive interface.
- Real-time device monitoring
- Easy scheduling of operations
- Remote control capabilities
- Intuitive user interface
- Manage air quality
- Enhance living space
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Welcome to the future of air treatment with Duux Smart, your ultimate companion for creating a comfortable and healthy living environment. Our app is designed to bring convenience and innovation right to your fingertips, allowing you to seamlessly connect and manage your Duux devices. With Duux Smart, you have the power to monitor your devices in real-time, ensuring optimal air quality and device performance at all times. The app's intuitive design allows for easy scheduling of operations, matching your lifestyle and ensuring your home is always welcoming. Remote control capabilities mean you can adjust settings, switch modes, and manage your devices from anywhere, offering both convenience and peace of mind. Our user-friendly interface makes controlling sophisticated air treatment simple, making it accessible to everyone. Why choose Duux Smart? It's not just about controlling your devices; it's about enhancing your living space and promoting a healthier, happier home. Download Duux Smart now and transform your approach to air treatment. Breathe easy and enjoy a smarter, more connected home.
MathBell
This app uses math puzzles to ensure you wake up. Solve arithmetic, missing numbers, or running totals to silence your alarm. It offers follow-up alerts and a wake-up check to keep you alert.
- Math puzzles to stop alarms
- Multiple puzzle types and difficulties
- Follow-up alarms until solved
- Limited snooze functionality
- Customizable alarm repeats
- Home and Lock Screen widgets
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MathBell is a math alarm clock. Your alarm rings through Silent and Focus, and it only stops when you solve a short puzzle. Solve to stop Each alarm asks for a few quick sums before it goes quiet. Pick the puzzle type and difficulty: arithmetic, running totals, missing numbers and more. Follow-ups until you solve it If you dismiss the alarm without solving, MathBell rings again every minute until the puzzle is solved. Snooze is limited, so you cannot keep putting it off. Built for mornings - Alarms ring through Silent and Focus with the system alarm sound - Weekday, weekend and custom repeats - Choose from six alarm sounds - Home Screen and Lock Screen widgets that show your next alarm - A wake-up check a few minutes after you solve, so you know you are really up Made for iPhone Duo MathBell works in portrait and landscape on both displays, so you can set alarms on the outer display or spread out on the inner one. Free and Pro Start with 3 alarms for free. MathBell Pro unlocks unlimited alarms, every puzzle type and difficulty, all sounds and widget styles. Choose a yearly or monthly subscription, or pay once for lifetime access. Subscriptions renew automatically until cancelled; manage them in Settings. No account, no ads, no tracking. MathBell stores your alarms on your device. Questions or feedback: mathbell@curatolabs.app Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mathbell.curatolabs.app/privacy/
Screenshots
Verdict
The clearest difference is rating: Duux at 4.8 against MathBell's 3.0. Duux also leads on in-app purchases (none vs 3) and ratings volume (23 vs 1). MathBell's advantage is update cadence (every 4 days vs monthly). On price and ads 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. MathBell sells 3 in-app purchases, starting at $1.99 per month. Duux asks for nothing beyond the download.
Duux holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Duux has 23 ratings behind it against 1, so its average is the more settled of the two.
Duux ships an update monthly, MathBell every 4 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.
| Parameter | Duux | MathBell |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (23 ratings) — better | 3.0 (1 ratings) |
| Positive reviews | 30.3% of reviews | — |
| Number of ratings | 23 — better | 1 |
| Update frequency | Monthly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 26.1 |
| Further details — not scored | ||
| Size | 122 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Duux B.V. | Tien Dat Nguyen |
Customer experience
Duux
MathBell
Bugs and requests
Duux
Reported bugs
5 issues- App frequently loses connection with device
- App unable to find or add device
- App UI and functionality regressed with updates
- Devices randomly disconnecting from WiFi
- App login/registration issues
Requested features
5 requests- Add ability to edit schedules
- Implement away mode or low temperature setting
- Allow rearranging of rooms in app
- Add more scheduling options and flexibility
- Improve Alexa/Google Home integration
MathBell
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Duux
No in-app purchases
MathBell
- MathBell Pro Monthly$1.991 Month
- MathBell Pro Yearly$4.991 Year
- MathBell Pro$14.99









