Comparison

Math Alarm Clock by Mathy vs Calex PyroNFC

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

Head to head
About

Math Alarm Clock by Mathy

This app requires users to solve math problems to turn off their alarms, ensuring a more effective wake-up experience. It offers customizable alarm settings, including difficulty levels, music choices, and snooze intervals. The app also features a nightstand clock display and adjustable screen brightness.

Highlights
  • Solve math problems to stop alarms
  • Adjustable math difficulty levels
  • Customizable alarm sounds and music
  • Repeating alarm options
  • Nightstand clock display
  • Customizable snooze intervals
Features
Read full description

Math alarm clock forces you to solve math problems to wake up! Stop the annoying alarm sounds from playing by solving varying levels of math equations - the best way to wakeup in the morning! Impossible to sleep through! ======FEATURES====== • Easy, Medium and Hard math difficulty levels to make sure you are able to challenge yourself when you wake up • Sounds that slowly fade in giving you a chance to wake up • Custom music selection - wake up to your OWN music from your music library! • Customizable nightstand clock display and customizable colors • Repeating alarms (set to repeat on weekdays, weekends, etc.!) • 100% FREE app! • Custom volume selection for each alarm you set! • Custom snooze intervals to allow you to snooze for any duration you want! • Preview & practice your math quiz before setting your alarm • Adjustable screen brightness by swiping up and down Nothing wakes you up faster and more reliably than having to perform mental tasks once you've woken up. Try solving the math problems to stop the songs or music playing...it's impossible to snooze through! Upgrades available via in app purchase: • Remove ads • Length of subscription (30 days) • Payment will be charged to iTunes Account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Terms of service - https://infinitewavemedia.com/tos

About

Calex PyroNFC

Configure infrared temperature sensors and read their current temperature using your device. Save settings to your phone and transfer them wirelessly to the sensor via NFC. You can also use NFC to capture temperature readings directly from the sensor.

Highlights
  • Configure PyroNFC sensor settings
  • Save settings to iOS device
  • Transmit settings via NFC
  • Read temperature via NFC
  • Select temperature units (°C/°F)
  • Set linear voltage output range
  • Configure alarm thresholds
Features
Read full description

Take temperature readings and configure the settings of Calex PyroNFC infrared temperature sensors Save settings to your iOS device, and tap the PyroNFC sensor with the device to transmit them. Settings are saved to the sensor even if the sensor is not powered. With the sensor powered, take the measured temperature by touching it with your NFC device. Configurable parameters: - Select units: °C/°F - Linear voltage output range (0-5/1-5/0-10 V DC) - Temperature range for voltage output - Alarm output threshold and hysteresis - Emissivity setting - Reflected temperature - Averaging period - Peak / valley hold mode - Hold period

Screenshots

Math Alarm Clock by Mathy3 screens
Calex PyroNFC4 screens

Verdict

The call

The clearest difference is review sentiment: Math Alarm Clock by Mathy at 74% against Calex PyroNFC's 0%. Math Alarm Clock by Mathy also leads on rating (4.4 vs 1.0) and ratings volume (111 vs 1). Calex PyroNFC's advantage is in-app purchases (none vs 12) and iOS requirement (8.0 vs 15.6). On price, ads and device support 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. Math Alarm Clock by Mathy sells 12 in-app purchases, starting at $0.99 per month. Calex PyroNFC asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Math Alarm Clock by Mathy holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Math Alarm Clock by Mathy has 111 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 74% of Math Alarm Clock by Mathy's written reviews are positive against 0% of Calex PyroNFC's.

UpkeepUpdate frequency

Math Alarm Clock by Mathy ships an update every 8 days, Calex PyroNFC every 3 weeks. The most recent releases landed on October 22, 2026 and October 29, 2026 respectively.

Scorecard7 real differences · 3 level
Math Alarm Clock by Mathy versus Calex PyroNFC: the parameters behind the verdict, then further details
ParameterMath Alarm Clock by MathyCalex PyroNFC
PriceFreeFree
Rating4.4 (111 ratings) — better1.0 (1 ratings)
Positive reviews73.7% of reviews — better0.0% of reviews
Number of ratings111 — better1
Update frequencyEvery 8 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.68.0 — better
Further details — not scored
Size67 MB32 MB
Age rating4+4+
DeveloperInfinite Wave Media, LLCCalex Electronics Limited

Customer experience

Math Alarm Clock by Mathy

All ratings108 ratings
Positive83.3%
Neutral4.6%
Negative12.0%
Written reviews38 reviews
Positive73.7%
Neutral5.3%
Negative21.1%

Calex PyroNFC

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Math Alarm Clock by Mathy

Reported bugs

5 issues
  • Alarms turn themselves off
  • Alarms do not stay on
  • Alarms do not go off
  • App doesn't load
  • Math difficulty setting is ignored

Requested features

4 requests
  • More variety in math equations
  • Allow alarms to work in Do Not Disturb mode
  • Allow alarms to work without the app being constantly on
  • Adjust alarm volume

Calex PyroNFC

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Math Alarm Clock by Mathy

Subscriptions2
  • Math Alarm Clock Pro by Mathy$0.991 Month
  • Mathy Pro Annual7 Days trial$9.991 Year
One-time10
  • Car Alarm Xtrm$0.99
  • Progressive$0.99
  • Rain On Metal$0.99
Show 7 more
  • Retro$0.99
  • Rooster Call$0.99
  • Scream$0.99
  • Sound Grenade$0.99
  • White Noise$0.99
  • All Sounds$3.99
  • Lifetime$29.99
None

Calex PyroNFC

No in-app purchases

Questions

Is Math Alarm Clock by Mathy free?
Math Alarm Clock by Mathy is free to download, with in-app purchases available.
Is Calex PyroNFC free?
Calex PyroNFC is free to download, with no in-app purchases.
Which has better reviews, Math Alarm Clock by Mathy or Calex PyroNFC?
Math Alarm Clock by Mathy is rated higher. Math Alarm Clock by Mathy averages 4.4 out of 5 from 111 ratings, while Calex PyroNFC averages 1.0 from 1 ratings.
Do Math Alarm Clock by Mathy or Calex PyroNFC have ads?
Neither Math Alarm Clock by Mathy nor Calex PyroNFC shows ads.
Which is updated more often, Math Alarm Clock by Mathy or Calex PyroNFC?
Math Alarm Clock by Mathy ships an update every 8 days, and Calex PyroNFC every 3 weeks. Most recently, Math Alarm Clock by Mathy was updated on October 22, 2026 and Calex PyroNFC on October 29, 2026.

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