Comparison

Duux vs MathBell

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Real-time device monitoring
  • Easy scheduling of operations
  • Remote control capabilities
  • Intuitive user interface
  • Manage air quality
  • Enhance living space
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

Duux4 screens
MathBell4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MathBell sells 3 in-app purchases, starting at $1.99 per month. Duux asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Duux ships an update monthly, MathBell every 4 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

Scorecard7 real differences · 3 level
Duux versus MathBell: the parameters behind the verdict, then further details
ParameterDuuxMathBell
PriceFreeFree
Rating4.8 (23 ratings) — better3.0 (1 ratings)
Positive reviews30.3% of reviews—
Number of ratings23 — better1
Update frequencyMonthlyEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better26.1
Further details — not scored
Size122 MB18 MB
Age rating4+4+
DeveloperDuux B.V.Tien Dat Nguyen

Customer experience

Duux

All ratings22 ratings
Positive90.9%
Neutral4.5%
Negative4.5%
Written reviews165 reviews
Positive30.3%
Neutral9.1%
Negative60.6%

MathBell

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%

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

None

Duux

No in-app purchases

3 purchases

MathBell

Subscriptions2
  • MathBell Pro Monthly$1.991 Month
  • MathBell Pro Yearly$4.991 Year
One-time1
  • MathBell Pro$14.99

Questions

Is Duux free?
Duux is free to download, with no in-app purchases.
Is MathBell free?
MathBell is free to download, with in-app purchases available.
Which has better reviews, Duux or MathBell?
Duux is rated higher. Duux averages 4.8 out of 5 from 23 ratings, while MathBell averages 3.0 from 1 ratings.
Do Duux or MathBell have ads?
Neither Duux nor MathBell shows ads.
Which is updated more often, Duux or MathBell?
Duux ships an update monthly, and MathBell every 4 days. Most recently, Duux was updated on November 7, 2026 and MathBell on November 9, 2026.

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