AtomicClock vs World Clock. Time Widget
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AtomicClock
This app displays the exact current time synchronized with NTP servers, offering a customizable clock view for precise time checks. It's ideal for setting watches, verifying timestamps, or comparing local and network time.
- Precise time from NTP servers
- Customizable clock faces
- Select or add time servers
- Local and UTC views
- 12/24 hour modes
- Customizable time format
- Acoustic ticking
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Check precise NTP reference time at a glance. AtomicClock helps you set watches, wall clocks, cameras, and other devices, compare local time with UTC, and follow moments when every second matters. Clear analog and digital time AtomicClock displays current time from NTP servers that reference atomic clocks. Choose a predefined server or add your own, then view local or UTC time in a clean analog or digital clock. Customize your reference clock • Switch between 12-hour and 24-hour time • Customize the time format • Choose from multiple clock faces and hands • Use a smooth, fluid second hand • Add acoustic ticking or the Greenwich Time Signal • Tap the screen to hide information and controls, freeze the display, or mute ticking Details for precise time checks View technical NTP information, including round-trip time and server stratum. Whether you are checking a timestamp, preparing a camera, aligning a wall clock, or setting a watch by hand, the seconds remain clear and easy to follow. AtomicClock is free to use. AtomicClock Pro is available as a one-time purchase with no subscription. It unlocks your preferred clock face, hands, and font, removes ads, and includes upcoming Pro features. AtomicClock displays NTP reference time for comparison and does not change your device’s system time. Results can vary with the selected server, network conditions, and device behavior.
World Clock. Time Widget
This app offers a world clock with a time calculator and customizable widgets for your home screen. It allows you to track time in over 30,000 cities, even offline, and rename locations for easy identification. The clean interface ensures fast navigation and a straightforward user experience.
- 30,000+ cities
- Offline functionality
- Multiple home screen widgets
- Time converter
- Rename places
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Our World Clock + Widgets goes beyond similar apps and iOS Clock App with the addition of a widget and the easy-to-use time calculator. It has a clean design that is straightforward for fast navigation. The app is free to download and has every option that makes it the perfect world clock. Features: • Choose from 30k cities • Use offline functionality • Add multiple Widgets on Home Screen • Adjust time with Time Converter • Rename your places Please note the subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period By using World Clock, you are agreeing to our Privacy Policy and Terms of Use: Private Policy http://getsfaxapp.com/privacy.html Terms of Use http://getfaxapp.com/terms.html Payment will be charged to iTunes Account at confirmation of purchase • 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
Screenshots
Verdict
The clearest difference is ads: World Clock. Time Widget at none against AtomicClock's shown. World Clock. Time Widget also leads on iOS requirement (12.0 vs 17.4). AtomicClock's advantage is review sentiment (84% vs 64%) and update cadence (monthly vs every 3 months). On price, rating, ratings volume 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
Both are free to download. AtomicClock sells 1 one-off in-app purchase and World Clock. Time Widget sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for AtomicClock against 4.7 for World Clock. Time Widget. Both are backed by a comparable volume of ratings — 5.6K and 4.4K respectively. Written reviews are what separate them: 84% of AtomicClock's written reviews are positive against 64% of World Clock. Time Widget's.
AtomicClock ships an update monthly, World Clock. Time Widget every 3 months. Both last shipped on November 6, 2026.
| Parameter | AtomicClock | World Clock. Time Widget |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5.6K ratings) — better | 4.7 (4.4K ratings) |
| Positive reviews | 84.3% of reviews — better | 63.9% of reviews |
| Number of ratings | 5.6K — better | 4.4K |
| Update frequency | Monthly — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.4 | 12.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Timo Partl | 7270356 Canada Inc |
Customer experience
AtomicClock
World Clock. Time Widget
User reviews
AtomicClock
From 5.6K App Store ratingsWhat we love
- 🚀 Accurate time
- 👍 Highly customizable
- 🚀 Precise to the second
- 👍 Easy to use
- 👍 Helpful for setting watches
Room to improve
- 🐛 Server connection issues
- 🔍 Limited time zone options
- 💰 Ads diminish clock view
- 🔍 Lacks some advanced features
- 🔍 Redundant for some users
World Clock. Time Widget
From 4.4K App Store ratingsWhat we love
- 💻 Simple and easy to use
- 🌍 Helpful for tracking time zones
- 🕰️ Straightforward interface
- 📊 Useful for international meetings
- 🔍 Comprehensive city database
Room to improve
- 🐛 Bugs and glitches in widget
- 🔍 Missing some major cities
- 🔒 Paid features behind paywall
- 🔄 Difficulty reordering locations
- 🕰️ Limited time display options
Bugs and requests
AtomicClock
Reported bugs
3 issues- Crashes on certain iOS versions
- Occasional freezing of hands
- Countdown timer sound not working
Requested features
5 requests- Add GMT/dual time display
- Implement widget support
- Add different second hand sounds
- Allow setting background color to match watch
- Include alarm/timer functionality
World Clock. Time Widget
Reported bugs
5 issues- Widget not loading correctly
- Time zone display issues
- Search function not working
- Compatibility problems on iOS 16
- Inconsistent date/day display
Requested features
5 requests- Add analog clock option
- Ability to display seconds
- More customization options
- Improved widget functionality
- Granular time zone selection
In-app purchases
AtomicClock
- Lifetime Pro Version$6.99
World Clock. Time Widget
- World Clock. Widget. Monthly$1.991 Month
- World Clock. Widget. Annually1 Month trial$15.991 Year
- Remove Ads$5.99
Questions
Is AtomicClock free?
Is World Clock. Time Widget free?
Which has better reviews, AtomicClock or World Clock. Time Widget?
Do AtomicClock or World Clock. Time Widget have ads?
Which is updated more often, AtomicClock or World Clock. Time Widget?
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