Comparison

ClockZ | Clock Display + Alarm vs Standby Clock

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

Head to head
About

ClockZ | Clock Display + Alarm

This app provides a customizable digital clock display with alarm, timer, and stopwatch functions. It offers features like photo backgrounds, automatic unlock, and large, easy-to-read visuals, optimized for nighttime use. Premium options unlock additional themes and battery display.

Highlights
  • Customizable digital clock display
  • Music alarm
  • Timer and stopwatch
  • Home screen widget
  • Photo and 3D map backgrounds
  • Automatic unlock
  • Battery display (premium)
Features
Read full description

ClockZ is a clock app that displays accurate current time. The largest digital clock is always displayed on the screen and can be extensively customized. In addition to the basic clock features, you can use the timer, alarm, stopwatch, widget, and many other features for free. Free Features • Digital Clock • Option to display or hide seconds, date, and day of the week • Music alarm (wake-up alarm) • Timer • Stopwatch • Widget (current time display) • Photo backgrounds • Automatic unlock (no sleep when the app is launched) • Tap for full screen • Clock font settings • Clock size adjustment (pinch gesture) • Four-directional rotation (portrait and landscape) Design: • Large and easy-to-read clock • Versatility • Optimized for nighttime use Frequently Asked Questions Q. About the 24-hour time format A. You can change it by going to Settings → General → Date & Time → 24-Hour Time. Q. Why isn’t the alarm sounding? A. Please check that notifications are enabled by launching the app, tapping the + button, and going to Settings. Also, ensure that your ringtone volume, silent mode, and the set time are correct. Q. What about time discrepancies? A. ClockZ synchronizes with your device’s time. Please check the time settings on your device. About ClockZ Premium: • ClockZ Premium is $2.99/month (US dollar standard) • Multiple devices with single purchase • Cancel anytime • No additional purchases, subscription only. • Auto renewable subscription Premium Features: • All text colors and themes • 3D map backgrounds • Battery display • Outline display Prices may vary by country and currency. Premium membership fees will be charged to your iTunes account. Your account will be charged for renewal within 24 hours before the current subscription period ends, with the renewal fee specified. Your subscription will automatically renew unless you cancel at least 24 hours before the end of the current period. You can manage or change the automatic renewal for ClockZ Premium in your Apple ID account within the Settings app (go to Settings → iTunes & App Store → Apple ID → View Apple ID → Subscriptions). Cancellation of your current paid membership will take effect after the end of the current subscription period. If you have any questions, please contact us through the contact information on our website. Privacy Policy: https://flymapslive.com/jp/privacy Terms of Use: https://flymapslive.com/jp/legal

About

Standby Clock

This app transforms your device into a full-screen digital clock with customizable fonts and colors. It offers a musical alarm, displays seconds on the dynamic island and lock screen, and can broadcast the time hourly. Enjoy background alarms with custom ringtones and various widget options.

Highlights
  • Full-screen digital time display
  • Seconds on dynamic island and lock screen
  • Customizable digital font styles and colors
  • Musical alarm with custom ringtones
  • Hourly chime and voice broadcasting
  • Lock screen and Home Screen widgets
Features
Read full description

Standby Clock, a beautiful music alarm clock that displays full-screen digital time. - Show seconds on dynamic island and lock screen - Provide a variety of digital font styles - Custom Clock Digital Color - Hourly Chime, Hourly voice broadcasting time - Display date, week, etc. - Support background alarm clock and custom music ringtones. - Support Home Screen widget, Lock Screen Widget, Standby mode.

Screenshots

ClockZ | Clock Display + Alarm4 screens
Standby Clock4 screens

Verdict

The call

The clearest difference is ads: ClockZ | Clock Display + Alarm at none against Standby Clock's shown. ClockZ | Clock Display + Alarm also leads on ratings volume (5.5K vs 712). Standby Clock's advantage is review sentiment (61% vs 47%). On price, rating, update cadence and in-app purchases 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. ClockZ | Clock Display + Alarm sells 10 in-app purchases, starting at $2.99 per month and Standby Clock sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for ClockZ | Clock Display + Alarm against 4.4 for Standby Clock. That said, the two scores are not equally well evidenced: ClockZ | Clock Display + Alarm has 5.5K ratings behind it against 712, so its average is the more settled of the two. Written reviews are what separate them: 47% of ClockZ | Clock Display + Alarm's written reviews are positive against 61% of Standby Clock's.

UpkeepUpdate frequency

ClockZ | Clock Display + Alarm ships an update every 3 weeks, Standby Clock every 6 weeks. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 7 level
ClockZ | Clock Display + Alarm versus Standby Clock: the parameters behind the verdict, then further details
ParameterClockZ | Clock Display + AlarmStandby Clock
PriceFreeFree
Rating4.5 (5.5K ratings) — better4.4 (712 ratings)
Positive reviews47.5% of reviews61.2% of reviews — better
Number of ratings5.5K — better712
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size58 MB56 MB
Age rating4+4+
DeveloperRage Box云云 唐

Customer experience

ClockZ | Clock Display + Alarm

All ratings5,490 ratings
Positive87.7%
Neutral4.4%
Negative7.9%
Written reviews217 reviews
Positive47.5%
Neutral9.7%
Negative42.9%

Standby Clock

All ratings712 ratings
Positive84.1%
Neutral5.5%
Negative10.4%
Written reviews85 reviews
Positive61.2%
Neutral10.6%
Negative28.2%

User reviews

ClockZ | Clock Display + Alarm

From 5.5K App Store ratings

What we love

  • 🕰️ Clear, large time display
  • 📟 Accurate time keeping
  • 🌙 Good for bedside clock use
  • 🎨 Customizable colors and styles
  • ⏱️ Useful timer and stopwatch features

Room to improve

  • 💰 Subscription model with limited free features
  • 📢 Intrusive ads and pop-ups
  • 🕰️ Lack of 12-hour time option
  • 🔒 Issues with restoring purchases
  • 🔋 Drains battery when left running

Standby Clock

From 712 App Store ratings

What we love

  • 👍 Simple and easy to use
  • 🕰️ Customizable clock display
  • 💡 Useful night light feature
  • 🔍 Clear and accurate time display

Room to improve

  • 🐛 Vertical time display not preferred
  • 🕰️ Lack of additional features (e.g., weather, date)
  • 💰 Paid app with limited free features
  • 🔋 Short screen time before turning off

Bugs and requests

ClockZ | Clock Display + Alarm

Reported bugs

5 issues
  • Sudden switch to 24-hour time mode
  • Alarms not triggering as expected
  • Ads reappearing after paid removal
  • Crashes when deleting alarms
  • Inconsistent time display when device is locked

Requested features

5 requests
  • Option to disable AM/PM indicator
  • Ability to move clock position on screen
  • Customizable alarm sounds and volume
  • Background image/wallpaper support
  • Improved timer functionality for tasks

Standby Clock

Reported bugs

2 issues
  • Clock not displaying properly on home screen
  • Alarm not working as expected

Requested features

4 requests
  • Add horizontal time display option
  • Include weather and date information
  • Improve screen timeout settings
  • Offer more customization options

In-app purchases

10 purchases

ClockZ | Clock Display + Alarm

Subscriptions2
  • ClockZ Premium$2.991 Month
  • ClockZ Premium$29.991 Year
One-time8
  • Good App$0.99
  • Tower Backgrounds$1.99
  • Place Backgrounds$1.99
Show 5 more
  • Theme$2.99
  • Best App$2.99
  • Remove Ads$4.99
  • Thank You$4.99
  • Never Give Up$9.99
3 purchases

Standby Clock

One-time3
  • Remove Ads$0.99
  • All Clock Styles$0.99
  • Pro Version$1.99

Questions

Is ClockZ | Clock Display + Alarm free?
ClockZ | Clock Display + Alarm is free to download, with in-app purchases available.
Is Standby Clock free?
Standby Clock is free to download, with in-app purchases available.
Which has better reviews, ClockZ | Clock Display + Alarm or Standby Clock?
ClockZ | Clock Display + Alarm is rated higher. ClockZ | Clock Display + Alarm averages 4.5 out of 5 from 5.5K ratings, while Standby Clock averages 4.4 from 712 ratings.
Do ClockZ | Clock Display + Alarm or Standby Clock have ads?
Standby Clock shows ads; ClockZ | Clock Display + Alarm does not.
Which is updated more often, ClockZ | Clock Display + Alarm or Standby Clock?
ClockZ | Clock Display + Alarm ships an update every 3 weeks, and Standby Clock every 6 weeks. Most recently, ClockZ | Clock Display + Alarm was updated on September 24, 2026 and Standby Clock on September 21, 2026.

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