Atomic Time - NTP Clock Sync

4.8
3.15K reviews
100K+
Downloads
Content rating
PEGI 3
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About this app

Step into the world of unparalleled accuracy with Atomic Time, the premier clock app. It redefines the standard for timekeeping by providing users with the most accurate time, meticulously synchronized with global NTP servers. Witness the essence of time through our elegantly minimalist analog display, beautifully paired with a crystal-clear digital clock beneath.

Especially valuable for enthusiasts and professionals alike, Atomic Time serves as a trusted reference for checking the accuracy of watches and setting them to the precise second. Crafted for simplicity and readability, this app is the definitive choice for anyone who values precision and style.

- Elegant Design: Enjoy a minimalist graphical analog clock along with a digital display, crafted for optimum clarity and aesthetic appeal.

- Customizable Themes: Personalize your clock with multiple color schemes such as Light, Dark, and Black (optimized for OLED displays). Dive into a world of color with variations like Warm Blaze, Pink Candy, and Bluebird to match your mood or decor.

- Time Server Selection: Choose from a wide array of time servers to sync with, ensuring you always have the fastest and most reliable connection.

- Sound & Display Settings: Customize your app with options to turn sound on or off, keep the display active, and select your preferred second hand animation – tick or sweep.

- Lightweight & Fast: Atomic Time is designed to be both fast and light, ensuring minimal impact on your device’s performance.
Updated on
Aug 12, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

4.7
2.9K reviews
Anga Mash
October 13, 2023
Very nice app that can become perfect with some minor additions. First, the ability to have only the digital, only the analog or both (as it is now) would be really nice and handy. Second, the date format would be nice to have as Day/Month/Year as well instead of only the inconvenient to many Month/Day/Year which is a bit confusing. Third, the ability to insert a server address instead of the drop down menu. That way someone can add the British NPL atomic clock which is one of the most accurate.
11 people found this review helpful
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Marty Dewfinger
January 6, 2022
I was actually looking for a clock widget, assumed this had one, it does not. But after just putting the app icon in a corner of my screen, I tap it and the clock appears. All that said, it's very functional, a superb looking clock analogue & digital, with stepped or sweep second hand, & hopefully very accurate. I think I stumbled upon a gem of app, add free as well which is awesome. Well done developer, I thank you.
20 people found this review helpful
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Jarhead
September 15, 2025
does almost exactly what it says it does. i noticed the hand-sweep fxn is not default, & for good reason. it doesn't take long to see it's off on it's timing. a bit fast as it passes the minute marks, eventually making its way to the next mark. i haven't heard "at the sound of the tone..." for decades. time to get a ham radio. oh yeah. no annoying ads & in-app purchases for this. i can't put a ½☆. I'll go w 5.
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What’s new

- fixed layout crop
- fixed large offset display