Comparison

Alarm Clock ◎ vs 12Calendar

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

Head to head
About

Alarm Clock ◎

This app provides a robust alarm clock experience with customizable wake-up challenges, multiple alarm types, and smart features to ensure you get out of bed. It offers a variety of sounds, weather integration, and task-based reminders to help even heavy sleepers start their day.

Highlights
  • Multiple alarm creation
  • Wake-up challenges (math, shake, text)
  • Customizable snooze settings
  • Weather and temperature display
  • Adjustable volume increase/decrease
  • Quick alarm for short tasks
  • Customizable themes and backgrounds
Features
Read full description

Get a loud wake up sound with smart alarm settings, weather settings, morning missions, math alarms and more, all from this single full-featured alarm clock app! Alarm Clock is a smart and powerful tool that can help even the heaviest sleepers get up in the morning. Create multiple alarms, each with loud ring tone sounds and alerts, then customize each one with features that help you wake up on time. Need a talking alarm clock with sleep timer? How about a shake-to-wake alarm? A wake-up app with puzzles and math problems that make it harder to hit the snooze button? Alarm Clock has all of these, and much more! If you find it difficult getting up in the morning and need a good puzzle alarm to get you out of bed, Alarm Clock is the app for you. There are six unique wake-up motivational challenges that keep you from turning the alarm off without being fully awake. It's perfect for heavy sleepers! Wake-up missions and alarm types: • Simple - Easy one-tap to dismiss the alarm. • Shake - Shake your device to stop the alarm. • Math - Solve a math problem to turn off the alarm sound. • Text - Unscramble the randomly generated text. • Walk - Get up and take a few steps to switch off the alarm. • Hold - Press & hold the button to terminate the alarm. Alarm Clock has all the features you need from a loud smart alarm app. It includes the wake-up missions and alerts described above, plus the ability to create multiple repeating alarms, quick-set non-recurring alarms, customize tons of settings, and more. The best features in Alarm Clock: • Create multiple alarms for a variety of uses. • Customize the number of times you can hit the snooze button. • Set the snooze time longer or shorter. • Display weather and temperature next to your alarm clock. • Smoothly increase or decrease the volume for a gentle wake-up. • Quick alarm to set a time limit for power naps and other short tasks. • Set a custom theme or photo as your clock background. • Add notes or a to-do list as wakeup reminders. • Lots of free music and loud sounds for an alarm ringtone. • Never oversleep when you use these smart alarm features! A simple but attractive interface makes Alarm Clock pleasing to use, even when you're staring at it through sleepy eyes! Use it to help you or people in your family get up in the morning, even if they're heavy sleepers. Alarm Clock is definitely not your ordinary alarm app. It's better! Alarm Clock offers premium subscription which is available on a yearly tier, auto-renewable. The yearly subscription is priced at 14.99 USD (or local equivalent) per year. Subscribe to the premium program to get access to alarm sounds, wake-up tasks, wallpapers and more... Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews for the same price and duration period as the original package unless auto-renew is turned off at least 24-hours before the end of the current period. An account will be charged for renewal within 24-hours prior to the end of the current period at the cost of the chosen package. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's iTunes Account Settings after purchase. No cancellation of the current subscription is allowed during the active subscription period. You may cancel a subscription during its free trial period via the subscription setting through your iTunes account. This must be done 24 hours before the end of the subscription period to avoid being charged. You may turn off the auto-renewal of your subscription via your iTunes Account Settings. However, you are not able to cancel the current subscription during its active period. Unused portions of free trials, if offered, will be forfeited upon purchase of a subscription. Links to our Privacy Policy and Terms of Service: Privacy Policy: http://www.rvappstudios.com/app-privacy-policy.html#privacy/ Terms of Use: http://www.rvappstudios.com/app-privacy-policy.html#terms/

About

12Calendar

Customize your lock screen with a calendar. Choose from various layouts, fonts, and colors to display your schedule conveniently. Add custom holidays by importing from your device's calendar.

Highlights
  • Customizable calendar layouts
  • Selectable fonts and colors
  • Adjustable transparency and frame borders
  • Add custom holiday data
  • Import holidays from iOS calendar
  • Display year, month, and day of the week
Read full description

Every time you open your lock screen, a beautiful calendar is right there to greet you. That's the everyday experience 12Calendar creates. Customize fonts, colors, and layouts to build a calendar wallpaper that's uniquely yours — simply and easily. ■ Layouts Choose from 28 calendar layouts. Free Layout mode lets you drag and resize each calendar freely. - You can change the size from the popup that appears when you tap the calendar. ■ Customize Every Detail - Individual color settings for weekdays, Saturdays, and Sundays - Day-of-week display language - 12 fonts with adjustable text size - Background opacity and border visibility - Week start day (Sunday or Monday) ■ Holiday Support Add holidays manually within the app. With an in-app purchase, holidays can be imported from your iOS Calendar. ■ How to Set Your Wallpaper After saving your calendar, set it as your wallpaper via the Photos app or iOS Settings. (Wallpaper cannot be changed directly from within this app.) ※ App Store screenshots were created using Screenshots.pro.

Screenshots

Alarm Clock ◎4 screens
12Calendar4 screens

Verdict

The call

The clearest difference is rating: Alarm Clock ◎ at 4.5 against 12Calendar's 3.2. Alarm Clock ◎ also leads on update cadence (fortnightly vs every 3 months) and ratings volume (3.5K vs 11). 12Calendar's advantage is ads (none vs shown). On price, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Alarm Clock ◎ sells 12 in-app purchases, starting at $2.99 per 7 days and 12Calendar sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Alarm Clock ◎ holds the better App Store score, 4.5 against 3.2. That said, the two scores are not equally well evidenced: Alarm Clock ◎ has 3.5K ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 60% of Alarm Clock ◎'s written reviews are positive against 62% of 12Calendar's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Alarm Clock ◎ ships an update fortnightly, 12Calendar every 3 months. The most recent releases landed on October 25, 2026 and October 23, 2026 respectively.

Scorecard5 real differences · 5 level
Alarm Clock ◎ versus 12Calendar: the parameters behind the verdict, then further details
ParameterAlarm Clock ◎12Calendar
PriceFreeFree
Rating4.5 (3.5K ratings) — better3.2 (11 ratings)
Positive reviews60.3% of reviews61.5% of reviews — better
Number of ratings3.5K — better11
Update frequencyFortnightly — betterEvery 3 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better17.0
Further details — not scored
Size241 MB3 MB
Age rating4+4+
DeveloperRV AppStudios LLClagoon

Customer experience

Alarm Clock ◎

All ratings3,472 ratings
Positive87.2%
Neutral4.5%
Negative8.3%
Written reviews438 reviews
Positive60.3%
Neutral12.3%
Negative27.4%

12Calendar

All ratings11 ratings
Positive45.5%
Neutral18.2%
Negative36.4%
Written reviews65 reviews
Positive61.5%
Neutral20.0%
Negative18.5%

Bugs and requests

Alarm Clock ◎

Reported bugs

3 issues
  • Alarm changing on its own
  • Alarm not working when phone is locked or on silent
  • Inconsistent behavior with alarm sounds and settings

Requested features

5 requests
  • Ability to import own photos as backgrounds
  • More color options for display
  • Ability to adjust brightness and font size
  • Snooze button placement improvement
  • Weather information updates

12Calendar

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Alarm Clock ◎

Subscriptions12
  • PRO Subscription3 Days trial$2.997 Days
  • Alarm Clock - Advanced Plus3 Days trial$7.991 Month
  • Alarm Clock - Advanced Gold$7.991 Month
Show 9 more
  • Advanced Subscription1 Month trial$7.991 Month
  • Diamond Monthly Pro3 Days trial$8.991 Month
  • Diamond Monthly Subscription$8.991 Month
  • Alarm Clock - Platinum$9.991 Year
  • Premium Subscription3 Days trial$14.991 Year
  • Alarm Clock - Ultimate Plus3 Days trial$19.991 Year
  • Ultimate Subscription3 Days trial$19.991 Year
  • Diamond Subscription7 Days trial$29.991 Year
  • Diamond Pro Subscription7 Days trial$29.991 Year
4 purchases

12Calendar

One-time4
  • UpgradeFree
  • Hide Logo & SAVE available$0.99
  • Enable load calendar$0.99
Show 1 more
  • Clear all functional limitation$1.99

Questions

Is Alarm Clock ◎ free?
Alarm Clock ◎ is free to download, with in-app purchases available.
Is 12Calendar free?
12Calendar is free to download, with in-app purchases available.
Which has better reviews, Alarm Clock ◎ or 12Calendar?
Alarm Clock ◎ is rated higher. Alarm Clock ◎ averages 4.5 out of 5 from 3.5K ratings, while 12Calendar averages 3.2 from 11 ratings.
Do Alarm Clock ◎ or 12Calendar have ads?
Alarm Clock ◎ shows ads; 12Calendar does not.
Which is updated more often, Alarm Clock ◎ or 12Calendar?
Alarm Clock ◎ ships an update fortnightly, and 12Calendar every 3 months. Most recently, Alarm Clock ◎ was updated on October 25, 2026 and 12Calendar on October 23, 2026.

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