Mobile app

Atomic Dial

It’s about time you got it right.

Atomic Dial is an atomic clock app for iPhone and Android, with atomic time synchronization, an analog watch-setting assistant, and alarms to the second.

Tired of being fashionably late because your watch is living in the past? Atomic Dial synchronizes with atomic time servers to give you the exact time—without “close enough.”

A closer look

See Atomic Dial in action

iPhone screenshots and previews from our App Store listing. Select an image to view it larger.

Atomic Dial showing local time, UTC, device clock offset, and synchronization status — Compare local time and UTC, and see your device’s offset from atomic time.

Atomic Dial Watch Sync screen with seconds display, haptic beat, and watch-setting instructions — Use Watch Sync as a precise reference while you set your watch by hand.

Atomic Dial alarm picker with hours, minutes, and seconds — Choose the hour, minute, and second for a precision alarm.

Atomic precision

Split-second accuracy makes it easy to trust the time you see.

Watch-setting assistant

Set the hands on an analog watch with a clear, accurate reference.

Alarms to the second

Create alarms with pinpoint accuracy when “around seven-ish” will not do.

The full experience is available during a three-day trial. Continued use after the trial requires a one-time payment. Atomic Dial also includes light and dark themes that follow your phone’s system appearance.

Good questions

Atomic Dial FAQs

What does Atomic Dial do?: Atomic Dial synchronizes with atomic time servers and displays a precise time reference. You can compare local time and UTC, check your device clock’s offset, set an analog watch by hand, and create alarms with a seconds field.
How do I use it to set an analog watch?: Open Watch Sync and use the large seconds display as your reference. Follow the on-screen tips to position the hands and restart your watch at the right second. The app guides you; it does not remotely adjust a mechanical or analog watch.
Does synchronization need an internet connection?: Yes. Atomic time synchronization requires contacting time servers over the internet. Check the app’s synchronization status before using the display as a synced reference; an offline display should not be treated as a newly verified time reading.
Can I choose seconds when setting an alarm?: Yes. The precision alarm picker includes hours, minutes, and seconds, rather than only hours and minutes.
Is Atomic Dial free to try?: The app offers the full experience during a three-day trial. Continued use after the trial requires a one-time payment. Check the listing for your platform and region for the current purchase details.
Is it available for iPhone and Android?: Yes. Download the iPhone app from the App Store or the Android app from Google Play using the official buttons below. The screenshots here show the iPhone app; appearance may differ on Android.

Download Atomic Dial

Available for iPhone on the App Store and Android on Google Play.