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 atomic clock app, NTP clock, UTC clock, precision clock, or reference clock for Android. 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 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
• Android tap actions to hide info/menu, freeze the screen, or mute ticking

Android 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, Android widgets use 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 advanced options such as preferred clock face, clock hand, clock font, ad removal, and upcoming Pro features.

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

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.

I installed and tested more than 2doz clock apps to find the best one. This one is head and shoulders above the rest. I love everything about it. The numbers on the digital clock are large and easy to read. Love being able to customize the analog clock with different faces/numbers (or no numbers) and hand styles, fluid or ticking seconds hand and different clock colors to make it easier to read. Ads are not intrusive. Worst thing is not having enough characters to say all of the things I love...

This app is nearly close to perfect for what I was looking for, basically a simple clock widget with seconds & a customizable date option. But after adding a widget, you cannot edit it; you can only create a-whole-nother one if you want to change anything like the font or date. Plus, I paid for Pro for the extra settings, & the fonts included in the app are not available for the widget(?). Also the widget could use a background option, either an image (custom or not) or color, with transparency.