AtomicClock: NTP Time

Contains adsIn-app purchases
4.7
14.5K reviews
100K+
Downloads
Content rating
Everyone
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About this app

Ever wanted to know exact current time to celebrate someone's birthday or New Year's Eve? Or simply to synchronize clocks? AtomicClock provides the accurate time from NTP servers which are getting the time directly from atomic clocks!

• current precise time in correct time format
• analog & digital clock
• choose from different time servers or add own ones
• customizable widget with time & date
• acoustic ticking & fluid second hand
• choose between different clock faces
• switch between local time and UTC, 24-hour and 12-hour clock
• sync your physical watches & clocks
• technical info like round trip time or stratum
• Greenwich Time Signal

AtomicClock: The most accurate time on Android.
Updated on
Apr 19, 2024

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.
This app may share these data types with third parties
Location, App activity and 2 others
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.7
13.4K reviews
Dave
January 10, 2024
This is simply a fun app to have, you can design pretty much your own clock face, including just about any color & font. The biggest bonus of course is the absolute accuracy, it even shows you how much off your cell phone & carrier are ! Can't get a better atomic clock app anywhere !
15 people found this review helpful
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A Google user
October 19, 2019
I love this app! It is the best NTP Clock app I have found. Ads are not obtrusive, but I paid for the Ad free version to give the author props. I only wish it had an option to display and update in tenths of a second, instead of showing ms ever 40 ms. Also, the offset from device time should be on it's own line at the bottom. All things considered, an excellent app, and not needing root to work is a bonus.
20 people found this review helpful
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T Peterson
October 5, 2021
I installed the free version of the Atomic clock, but it appears the author doesn't want me to be able to use the free app, since the only way the widget comes out is white on a clear background, an unusable combination. In addition, the size of the digital clock's characters is too small. This app is crippled, so I deleted it. Good riddance.
14 people found this review helpful
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Timo Partl
October 5, 2021
Sorry you don't like the app. It seems like you rated the widget part only. Could you perhaps send me a screenshot how the widget appears on your screen? Me and other users have no issue using the widget. Perhaps your launcher cripples the widget, the widget relies on the launcher to supply correct width and height information. You can also resize