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 shows precise reference time from NTP time servers in a clean analog and digital clock display.

Use AtomicClock as an atomic clock, NTP clock, UTC clock, reference clock, or everyday precision clock when accurate seconds are important.

Core features:
• precise current time from NTP servers
• local time and UTC time
• analog clock and digital clock views
• customizable home screen clock widget with time and date
• predefined time servers and custom time server selection
• 12-hour and 24-hour modes
• customizable time format
• multiple clock faces and clock hands
• smooth fluid second hand
• acoustic ticking sounds
• Greenwich Time Signal
• technical NTP details such as round-trip time and stratum
• screen tap actions to hide info, freeze the screen, or mute ticking
• picture-in-picture mode

AtomicClock is useful for manually setting watches, wall clocks, cameras, and other devices, checking exact time before an event, comparing local time with UTC, or keeping a clear seconds clock on screen while you work.

For technical users, AtomicClock can show NTP server information so you can see more than just the clock face. Accuracy depends on the selected time server, network conditions, and device behavior.

AtomicClock is free to use. Some advanced features require AtomicClock Pro, available as a one-time purchase with no subscription.

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