AtomicClock: NTP Time

Contains adsIn-app purchases
4.6
17.2K reviews
500K+
Downloads
Content rating
PEGI 3
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

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
Aug 8, 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.
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

4.6
15.9K reviews
J Mct
July 5, 2025
it's a good app. I pay for a full version. I have an old school Casio watch. I like to sync my watch to the second. the display is clean and plan. You don't need an atomic watch. quartz is very accurate as long as you synchronise it.
2 people found this review helpful
Did you find this helpful?
Timo Partl
July 5, 2025
Glad you’re enjoying the app and using it to keep your Casio synced up! Thanks for the support and your feedback on the display.
Tal Oikherman
August 26, 2025
The new type of ads that covers half of the screen is absolutely unbearable. Yes, you can fold them but this is soo much, really. Uninstalled.
Did you find this helpful?
Timo Partl
August 26, 2025
Sorry if the ads are too annoying for you, I don't like ads either. Unfortunately, they’re the only way to offer a free version of the app. I’m a solo app developer and rely on the income from my apps. You can always purchase the Pro version for a small one-time fee, and all ads will be gone forever. Why is that not an option for you?
Siddharth Bhattacharya
September 3, 2025
Love the App & Premium features. Can we have an option in the Widgets to format the date as Wed 03 Sep 2025 rather than having the option of Weekday Toggle. Keeping Toggle option on, Weekday comes at the bottom. Looks weird.
3 people found this review helpful
Did you find this helpful?