Comparison

Atomic Clock PRO vs World Clock Time Zone Widget

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

Head to head
About

Atomic Clock PRO

Get the most accurate time from an official atomic clock server. This app automatically detects your time zone and allows custom backgrounds. Easily switch between digital and analog clock displays with a swipe.

Highlights
  • Exact time from atomic clock
  • Automatic time zone recognition
  • Customizable background images
  • Digital and analog clock modes
  • Optional sound alerts
  • Color customization
Features
Read full description

Get accurate time on your iPhone and iPad by syncing with an official atomic clock time server. Download now for free! If you want exact time, a precise time reference, or an easy-to-read clock display, this app is designed for that. It automatically recognizes your time zone, lets you use one of your own photos as the background, and lets you switch between a digital display and a classic analog clock with a simple swipe. It is ideal as a personalized desk clock, a reliable travel companion, an everyday reference clock, or when you need exact time to set a mechanical watch accurately. Overview: - Accurate and precise time synced from an official atomic clock time server - Automatically recognizes your time zone and shows the current local time - Choose digital, analog, or combined analog and digital clock displays - Swipe to switch between clock displays - Resize the digital clock for a larger or smaller display - Includes time (hours, minutes, and seconds), date, and day of the week (optional) - Optional sound every second or every minute - Change clock and background colors - Use your own photos as background images - Choose atomic clock sync or your device's system clock - Option to keep the screen awake while the app is open - Works in portrait and landscape mode - For iPhone and iPad Helpful for: - A personalized desk clock at home or at work - Getting the correct local time while traveling - Setting a mechanical watch accurately - A clear reference clock when you want accurate, easy-to-read time PLEASE NOTE: You can switch between the analog and digital clock by swiping left or right across the clock. Disclaimer: Please note that whilst all reasonable care has been taken to make this application as accurate as possible we can not guarantee 100% accuracy. Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

World Clock Time Zone Widget

Easily check the current time and date in any location worldwide directly from your device's Notification Center. This app is ideal for international communication, travel planning, and staying connected with loved ones across different time zones.

Highlights
  • Notification Center widget for quick access
  • Comprehensive city database
  • Automatic daylight saving adjustments
  • Customizable clock display
  • Time travel feature for planning
  • Day/night indicator for timezones
  • iCloud sync for locations
Features
Read full description

A world clock for the people in your life. Whether your family is spread across countries or your team is split across time zones, World Time Widget keeps you thoughtfully in sync. Add clocks for the cities that matter, give each one a name that means something to you, and know at a glance whether it’s a good time to reach out. Over one million downloads. WORLD CLOCKS See the time in any city, instantly. Add as many clocks as you need and label them the way you actually think of them: “Mum in Sydney”, “Berlin office”, “Charlie deployed.” HOME SCREEN, LOCK SCREEN & STANDBY Your most important world times are always one glance away — no need to open the app. Widgets for every Apple surface, with up to 8 time zones on a single large widget. DAY & NIGHT STATE Every clock shows whether it’s day or night for the person on the other end. So you know before you text. MEETING PLANNER Need to find a time that works across time zones? Drag through the day to find the right slot, without the mental arithmetic. APPLE WATCH Your world clocks on your wrist. A dedicated Apple Watch app and support for multiple complications keep your times visible wherever you are. IPHONE, IPAD & APPLE WATCH Works beautifully across all your Apple devices, with your clocks syncing seamlessly via iCloud. No ads, no sign up. Just your clocks. FREQUENTLY ASKED QUESTIONS Does World Time Widget have a home screen widget? Yes. There are widgets for every Apple surface: home screen, lock screen, StandBy mode, and Apple Watch. You can show up to 8 time zones on a single large widget, so everything you need is one glance away. Can I use custom labels instead of city names? Yes. You can name any clock whatever makes sense to you. “Mum in Sydney” tells you at a glance whether it’s safe to call. “Dev team in Berlin” tells you whether they’re in the office. Your clocks, your labels. Does it work on Apple Watch? Yes. There’s a dedicated Apple Watch app plus support for multiple complications, so your world clocks are always on your wrist. Can I convert time zones and schedule meetings? Yes. The built-in meeting planner lets you drag across the day to find a time that works for everyone, across as many time zones as you need. No mental arithmetic, no switching between apps. How many cities can I add? As many as you need. You can show up to 8 time zones at once on a large widget, and you can add more clocks to the app itself. Does it handle daylight saving time automatically? Yes. World Time Widget updates automatically for daylight saving changes worldwide, so your times are always accurate. Does it work on iPad as well as iPhone? Yes. World Time Widget works across iPhone, iPad, and Apple Watch. Your clocks sync across all your devices via iCloud. What makes it different from Apple’s Clock app? Apple’s Clock app is useful, but limited. World Time Widget adds a day/night indicator for every clock so you can see at a glance who’s awake, lets you use personal labels instead of city names, and puts your world clocks on your home screen, lock screen, StandBy, and Apple Watch with far more flexibility. Apple Clock also caps out at 4 cities in a widget. World Time Widget shows up to 8. Is there a free version? World Time Widget is free to download with a premium upgrade available for additional features. Terms of service: https://world-time.app/terms.pdf Privacy policy: https://www.iubenda.com/privacy-policy/68114171

Screenshots

Atomic Clock PRO4 screens
World Clock Time Zone Widget4 screens

Verdict

The call

The clearest difference is ads: World Clock Time Zone Widget at none against Atomic Clock PRO's shown. World Clock Time Zone Widget also leads on update cadence (fortnightly vs every 3 months) and ratings volume (31K vs 10K). Atomic Clock PRO's advantage is iOS requirement (15.6 vs 17.0). On price, rating, review sentiment 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. Atomic Clock PRO sells 2 in-app purchases, starting at $1.99 per month and World Clock Time Zone Widget sells 10 in-app purchases, starting at $1.99 per month. 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 — 4.7 for Atomic Clock PRO against 4.7 for World Clock Time Zone Widget. Both are backed by a comparable volume of ratings — 10K and 31K respectively. Written reviews are what separate them: 73% of Atomic Clock PRO's written reviews are positive against 69% of World Clock Time Zone Widget's.

UpkeepUpdate frequency

Atomic Clock PRO ships an update every 3 months, World Clock Time Zone Widget fortnightly. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 6 level
Atomic Clock PRO versus World Clock Time Zone Widget: the parameters behind the verdict, then further details
ParameterAtomic Clock PROWorld Clock Time Zone Widget
PriceFreeFree
Rating4.7 (10K ratings)4.7 (31K ratings)
Positive reviews73.0% of reviews — better68.6% of reviews
Number of ratings10K31K — better
Update frequencyEvery 3 monthsFortnightly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS15.6 — better17.0
Further details — not scored
Size6 MB91 MB
Age rating4+4+
DeveloperBrachmann Online Marketing GmbH & Co. KGLasmit TLB Ltd

Customer experience

Atomic Clock PRO

All ratings10,111 ratings
Positive92.3%
Neutral3.5%
Negative4.2%
Written reviews422 reviews
Positive73.0%
Neutral5.9%
Negative21.1%

World Clock Time Zone Widget

All ratings30,725 ratings
Positive93.0%
Neutral3.4%
Negative3.7%
Written reviews570 reviews
Positive68.6%
Neutral7.4%
Negative24.0%

User reviews

Atomic Clock PRO

From 10K App Store ratings

What we love

  • ⭐ Accurate time display
  • 📟 Useful for timing events
  • 🕰️ Helpful for setting other clocks
  • 🔍 Large, easy-to-read clock face

Room to improve

  • 💸 Subscription model for ad-free version
  • 📢 Excessive advertisements
  • 🔍 Small font for seconds display
  • 🔀 Difficulty in displaying both analog and digital clocks simultaneously

World Clock Time Zone Widget

From 31K App Store ratings

What we love

  • 🚀 Simple and functional
  • 🚀 Time everywhere
  • 🚀 Invaluable for dealing with timezones
  • 👍 Used by everyone
  • 👍 Excellent customer service

Room to improve

  • 🐛 Time is wrong for some cities
  • 🐛 Widget doesn't work properly
  • 🐛 Buggy
  • 💰 Requires subscription for full features
  • 💰 Misleading about free features

Bugs and requests

Atomic Clock PRO

Reported bugs

3 issues
  • Second hand occasionally runs in reverse
  • Digital clock display cuts off on some devices
  • Inconsistent behavior when switching between clock types

Requested features

3 requests
  • Customizable clock face options
  • Ability to set widget on home screen
  • Sync with system clock to automatically update time

World Clock Time Zone Widget

Reported bugs

3 issues
  • Time zone display issues
  • Widget freezing and not updating
  • Inability to edit or remove time zones

Requested features

4 requests
  • Display date along with time
  • Ability to have 24-hour and 12-hour clocks side-by-side
  • Customizable widget layout and colors
  • Notification alerts for time zone changes

In-app purchases

2 purchases

Atomic Clock PRO

Subscriptions1
  • Premium$1.991 Month
One-time1
  • Remove Ads$5.99
10 purchases

World Clock Time Zone Widget

Subscriptions7
  • Premium Club Monthly$1.991 Month
  • Monthly$1.991 Month
  • Monthly$6.991 Month
Show 4 more
  • Premium Club - Annual3 Days trial$9.991 Year
  • Annual3 Days trial$19.991 Year
  • Annual3 Days trial$29.991 Year
  • Pro Club - Family Sharing$29.991 Year
One-time3
  • Premium Club Lifetime$49.99
  • Lifetime$59.99
  • Lifetime$99.99

Questions

Is Atomic Clock PRO free?
Atomic Clock PRO is free to download, with in-app purchases available.
Is World Clock Time Zone Widget free?
World Clock Time Zone Widget is free to download, with in-app purchases available.
Which has better reviews, Atomic Clock PRO or World Clock Time Zone Widget?
Atomic Clock PRO and World Clock Time Zone Widget are both rated 4.7 out of 5 on the App Store, from 10K and 31K ratings respectively.
Do Atomic Clock PRO or World Clock Time Zone Widget have ads?
Atomic Clock PRO shows ads; World Clock Time Zone Widget does not.
Which is updated more often, Atomic Clock PRO or World Clock Time Zone Widget?
Atomic Clock PRO ships an update every 3 months, and World Clock Time Zone Widget fortnightly. Most recently, Atomic Clock PRO was updated on October 13, 2026 and World Clock Time Zone Widget on October 14, 2026.

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