AtomicClock: NTP Clock

Timo Partl

Contains adsIn-app purchases

About this app

Need the exact time to set a watch, set a wall clock, compare UTC, or catch a moment where seconds matter? AtomicClock displays precise NTP time from internet time servers that reference atomic clocks.

Use AtomicClock as a clean NTP clock, atomic clock app, UTC clock, precision clock, or reference clock. It combines a readable analog clock and digital clock with technical network time details when you need them.

Why people use AtomicClock
• Check exact current time from selectable NTP time servers
• Manually set watches, wall clocks, cameras, radios, and other devices
• Compare local time with UTC, GMT, and Greenwich Time Signal
• Keep a seconds clock open for New Year's Eve, birthdays, photography, astronomy, radio, IT, engineering, and hobbies
• Use a clear clock display on your phone or tablet

NTP time and server control
• Choose from predefined time servers or add a custom NTP time server
• View technical NTP information such as round-trip time and stratum
• Switch between local time and UTC
• Use 12-hour or 24-hour time and customize the time format
• Check network time without changing your Android system clock

Clock display and sounds
• Analog clock and digital clock views
• Multiple clock faces and clock hands
• Smooth second hand for an easy-to-read seconds display
• Optional acoustic ticking sounds
• Greenwich Time Signal for classic reference timing
• Tap actions to hide info/menu, freeze the screen, or mute ticking

Clock widget
• Add a customizable home screen clock widget with time and date
• AtomicClock Pro includes many widget customization options
• For technical and battery reasons, the clock widget uses Android system time; open the app for NTP reference time from selected servers

Free and Pro
AtomicClock is free to use. AtomicClock Pro is a one-time purchase with no subscription and unlocks preferred clock face, clock hand, clock font, ad removal, all tap actions, picture-in-picture mode, and upcoming Pro features.

If you need precise time, atomic time, an NTP clock, a UTC clock, a GMT clock, an analog clock, or a simple reference clock for setting devices manually, AtomicClock keeps it clear and focused.

Ratings and reviews

I opened the screen on my app and found it running quickly, date, hour minute and second just doing its job. I love the dark back drop for easy reading, especially when I have just woke up and also because my photophobia can be upset by a too- bright screen. (That's a thoughtfulness other apps could learn from you.). I would like to add that while some folks can only read digital time, you offer a face clock as well. If you offered a calendar/alarm clock I could get rid of 2 other apps.

Ok. Was told to never argue with a dummy. It was included. For free. Now its not. Shame. Enough said. Reply. I would have never kept the app. Reply to publisher... Yes. Ive been using the app for months with the widget. Until recently when you killed it unless I pay on top of viewing ads. Shame. made it so you have to pay to use the widget. On top of ads already in the app. Uninstalling.

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.

What’s new

• Redesigned the color picker for app and widget colors, with presets, a color wheel, and brightness control
• Pro: widget backgrounds can now be customized with color and opacity, and default widget colors follow your Android theme better
• Settings now use clearer icons to make customization options easier to scan
• Custom NTP servers now support host:port entries and better validation before saving