Comparison

Alarm Clock HD vs Clock

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

Head to head
About

Alarm Clock HD

Wake up gently with your favorite music or sounds using this advanced alarm clock. It offers customizable nightstand displays, sleep tracking, and a sleep timer to help you unwind. Enjoy features like local weather and an instant flashlight, with an option to go ad-free via subscription.

Highlights
  • Unlimited alarms with Apple Music or custom sounds
  • Sleep tracking
  • Customizable nightstand display
  • Sleep timer
  • Local weather information
  • Instant flashlight
  • Screen saver for OLED displays
Features
Read full description

Sleep better and start the day with your favorite tunes. Are you curious to see how much you slept? Then, track your sleep in the app. Alarm Clock HD is the app to help you enjoy restful sleep and wake up worry-free. How Alarm Clock HD helps you sleep better: • Unlimited Alarms: Apple Music or Alarm Sounds • Customize Nightstand display colors • Sleep Timer • Local Weather Information • Instant Flashlight - shake the device • Full watchOS 2 support • Screen Saver - for devices with OLED display WAKE UP ON TIME: Proper Alarm Settings • Keep the app open and running always to have your alarm go off and play the sounds you’ve set for ‘Music'. When your app is open, you can use the volume slider within the app. When the app is in the background, use the device volume to set your volume. • Make sure your battery is charged and have your notifications turned on before you go to sleep, when the battery level goes below 30% it might not sound. This is due to prevent the device from dying and the alarm not going off. • Keep your Apple Music available on your device The music you can select consists of everything you have available on your ‘Apple Music' app on your device. If the music is saved on your iCloud, and not on the device itself, it won’t be available. NEVER MISS AN ALARM When you close the app and do not have it running in the background, the alarm will use the device volume instead and play the notification sound system. The app will close itself automatically after 10 hours of inactivity. This is due to prevent the device from dying and the alarm not going off. When your device is muted, set to ‘Do Not Disturb’, or your device volume is set to 0, the alarm won’t play properly. It will still show the notification without any sound. This is due to Apple’s restrictions as we are unable to access the app settings when the app is closed, only when it’s open or running in the background. SUBSCRIPTION IN ALARM CLOCK HD Upgrade to a Premium Membership and receive the following ongoing value: • Ad-Free • News & X feeds (Twitter) • Premium Customer Support Terms & Conditions: https://impalastudios.com/terms Privacy Policy: https://impalastudios.com/privacy >> WE LOVE FEEDBACK As always, we appreciate your feedback. Please email us at support@impalastudios.com with any suggestions or questions, our support team is ready and happy to help. WAKE UP YOUR WAY, EVERY DAY

About

Clock

This app displays the time with a minimalistic design, utilizing the full screen. It offers extensive customization for time format, including 12/24 hour, leading zeros, and seconds precision. Screen brightness can be adjusted by swiping, and screen dimming can be prevented.

Highlights
  • Full-screen display
  • Customizable time format (12/24hr, seconds)
  • Adjustable screen brightness
  • Prevent screen dimming
  • Minimalistic design
Features
Read full description

A simple app that displays the time beautifully and in the most minimalistic way possible while using the whole size of your screen. The time format is completely customizable! You can choose to: – use the 24 hours or 12 hours format with am/pm – show a leading zero in front of single-digit hours – show seconds or only hours and minutes – even display tenths, hundredths and thousandths of a second! You can also optionally adjust the brightness of the clock by swiping on the screen and configure whether you want the app to prevent your screen from automatically turning off!

Screenshots

Alarm Clock HD4 screens
Clock4 screens

Verdict

The call

Alarm Clock HD and Clock both sit at 4.5 stars, but that hides the real split: 84% of Clock's written reviews are positive against 32% of Alarm Clock HD's. Clock also leads on in-app purchases (none vs 11) and ads (none vs shown). Alarm Clock HD's advantage is update cadence (fortnightly vs every 12 months) and ratings volume (104K vs 152). On price, rating 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. Alarm Clock HD sells 11 in-app purchases, starting at $1.49 per month. Clock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Alarm Clock HD against 4.4 for Clock. That said, the two scores are not equally well evidenced: Alarm Clock HD has 104K ratings behind it against 152, so its average is the more settled of the two. Written reviews are what separate them: 32% of Alarm Clock HD's written reviews are positive against 84% of Clock's.

UpkeepUpdate frequency

Alarm Clock HD ships an update fortnightly, Clock every 12 months. The most recent releases landed on October 19, 2026 and October 13, 2026 respectively.

Scorecard7 real differences · 3 level
Alarm Clock HD versus Clock: the parameters behind the verdict, then further details
ParameterAlarm Clock HDClock
PriceFreeFree
Rating4.5 (104K ratings) — better4.4 (152 ratings)
Positive reviews31.7% of reviews84.5% of reviews — better
Number of ratings104K — better152
Update frequencyFortnightly — betterEvery 12 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.612.0 — better
Further details — not scored
Size234 MB2 MB
Age rating4+4+
DeveloperImpala StudiosMax-Joseph Krempl

Customer experience

Alarm Clock HD

All ratings104,303 ratings
Positive88.4%
Neutral4.7%
Negative6.9%
Written reviews926 reviews
Positive31.7%
Neutral8.2%
Negative60.0%

Clock

All ratings152 ratings
Positive84.2%
Neutral3.3%
Negative12.5%
Written reviews116 reviews
Positive84.5%
Neutral3.4%
Negative12.1%

User reviews

Alarm Clock HD

From 104K App Store ratings

What we love

  • 🚀 Reliable alarm clock
  • 🎨 Customizable colors
  • 🔊 Ability to use music as alarm
  • 💤 Gradual volume increase

Room to improve

  • 🐛 Alarm not going off
  • 🔍 Difficulty seeing small buttons/text
  • 💸 Subscription model for ad-free version
  • 🔋 High battery consumption
  • 🔇 Alarm muting phone volume

Clock

From 152 App Store ratings

What we love

  • 👍 Simple, minimalist design focused solely on displaying time
  • 🆓 Completely free with no ads or in-app purchases
  • 🔒 No data collection or tracking
  • 🔆 Adjustable brightness/dimming feature for nighttime use
  • ⏱️ Displays seconds and milliseconds options

Room to improve

  • 🐛 Settings not persisting (12/24 hour format reverts)
  • 🔋 High battery consumption reported by some users
  • 📱 No landscape mode option (conflicting reports)
  • 🔆 Brightness controls remain visible when dimmed
  • 🐛 Occasional font weight fluctuations

Bugs and requests

Alarm Clock HD

Reported bugs

4 issues
  • Alarm randomly snoozing itself
  • Alarm not working when phone is muted
  • Alarm sound not playing
  • Alarm screen freezing/crashing

Requested features

4 requests
  • 24-hour clock option
  • More alarm sounds/tones
  • Ability to use own music files
  • Do not disturb mode

Clock

Reported bugs

12 issues
  • 12/24 hour format setting not saving properly
  • Widget fails to display current time
  • Siri cannot distinguish between this app and Apple's Clock
  • App not appearing in Shortcuts app list
  • Screen burn-in after extended use
Show 7 more
  • Font weight changing unexpectedly during use
  • AM/PM indicator appearing without user action
  • App freezing and blocking phone access
  • Camera turning on automatically after download
  • Excessive battery drain on some devices
  • Display remaining bright when dimming is enabled
  • Wrong time display with no way to set correct time

Requested features

12 requests
  • Date display option (most frequently requested)
  • Bold/thicker font option for better readability
  • Color customization (especially red for night vision preservation)
  • Widget support with live time display
  • Battery percentage indicator
Show 7 more
  • Timer functionality
  • Donation/tip button for supporting developer
  • Dark red color option to reduce room lighting impact
  • AM/PM positioning adjustment (above, below, or between digits)
  • Screen burn-in prevention feature
  • Settings toggle visibility improvement
  • Ability to replace system status bar clock

In-app purchases

11 purchases

Alarm Clock HD

Subscriptions11
  • Premium member - 1 month$1.491 Month
  • Premium Features - Weekly$1.997 Days
  • Premium Features - Monthly3 Days trial$2.591 Month
Show 8 more
  • Upgrade to Premium Features$5.496 Months
  • Premium Yearly$9.991 Year
  • Premium Yearly3 Days trial$11.991 Year
  • Upgrade Your Alarm Clock3 Days trial$14.991 Year
  • Premium yearly$19.991 Year
  • Premium yearly3 Days trial$19.991 Year
  • Premium yearly3 Days trial$24.991 Year
  • Premium yearly3 Days trial$29.991 Year
None

Clock

No in-app purchases

Questions

Is Alarm Clock HD free?
Alarm Clock HD is free to download, with in-app purchases available.
Is Clock free?
Clock is free to download, with no in-app purchases.
Which has better reviews, Alarm Clock HD or Clock?
Alarm Clock HD is rated higher. Alarm Clock HD averages 4.5 out of 5 from 104K ratings, while Clock averages 4.4 from 152 ratings.
Do Alarm Clock HD or Clock have ads?
Alarm Clock HD shows ads; Clock does not.
Which is updated more often, Alarm Clock HD or Clock?
Alarm Clock HD ships an update fortnightly, and Clock every 12 months. Most recently, Alarm Clock HD was updated on October 19, 2026 and Clock on October 13, 2026.

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