AtomicClock: Exact NTP Time

Timo Partl

Contains adsIn-app purchases

About this app

Need the exact time to set a watch, align a wall clock, compare UTC, or catch a moment where seconds matter? AtomicClock shows precise reference time from NTP time servers in a clear analog or digital clock.

NTP servers provide network time referenced to atomic clocks. Choose a predefined or custom time server, then view local time or a UTC clock in 12-hour or 24-hour format. Use AtomicClock as an NTP clock, precision clock, reference clock, or seconds clock for manual time checks.

Practical ways to use AtomicClock

• Set a watch, wall clock, camera, or other device manually
• Compare local time with UTC
• Check precise time before an event or scheduled task
• Keep a clear clock visible while you work using picture-in-picture with Pro

Clock display and signal options

• Analog clock and digital clock views
• Custom time formats, clock faces, hands, and fonts
• Smooth, fluid second-hand movement
• Optional acoustic ticking sounds
• Greenwich Time Signal
• Home screen clock widget with time and date
• Tap actions to hide information, freeze the display, or mute ticking

For technical NTP checks, view details such as the selected time server, round-trip time, and stratum. Accuracy depends on the server, network conditions, and device behavior.

AtomicClock is designed for reference time and manual clock sync. It does not automatically change device system time. The home screen widget uses system time for technical and battery reasons.

AtomicClock is free to use. AtomicClock Pro adds preferred clock styles and fonts, many widget customization options, all tap actions, picture-in-picture, and ad removal. Pro is a one-time purchase through your Google Play account with no subscription.

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.