AtomicClock — NTP Time 4+

The most precise time possible

Timo P

Designed for iPad

    • 4.8 • 3.4K Ratings
    • Free
    • Offers In-App Purchases



Ever wanted to know exact current time to celebrate someone's birthday or New Year's Eve? Or simply to synchronize clocks? AtomicClock provides exact times based on NTP servers which are getting their time directly from atomic clocks!

• current time in correct time format
• analog clock
• choose from different time servers
• acoustic ticking
• choose between different clock faces
• switch between local time and UTC, 24-hour and 12-hour clock

What’s New

Version 3.2.9

• Reduced app size
• General performance & stability improvements

Ratings and Reviews

4.8 out of 5
3.4K Ratings

3.4K Ratings

Irish Spike ,

Best Time App Ever!

I am a watch collector, main focus on Rolex as well as JLC, and several others I today picked up from my dealer a new steel Datejust, my focus is “functional “ rather than vintage or simply aesthetic hence my need for a good precise time app both to sync and also a diagnostic: time deviation. I’ve had several apps over the years 3 at least! After coming home from my Rolex dealer I wanted to get a solid sync for my fresh from box timepiece, both to set accurately but as a start point getting a feel of Calibre 3235 over next week. I looked at last app but it had some annoying issues. Hey I saw this and it was free! Downloaded SIMPLE TO custom set I gave it a more legible background for me put in wider hands and bolder hour markers. Easy peasy! I compared it to a G Shock that I recently calibrated from a good signal! It’s was SPOT ON AND I LOVE THE WAY YOU CAN CUSTOMIZE IT FOR YOUR USAGE! Having rambled !! Short summation it’s the easiest, set up, and can be as simple or give as much as one needs! THIS IS THE SINGLE BEST APP THIS WATCH GUY HAS EVER HAD THE PLEASURE TO HAVE USED! Thanks to the programmers this!

Si Cantwell ,

It works

I’m kind of a time nerd. Most clocks, iPhone included, give time to the minute. If you’re setting another clock, you can’t get it right to the second unless you wait for another new minute to turn over. With Atomic Clock, you can anticipate the new minute and set digital or analog clocks to the precise second. I find myself using it more often than I thought I would. (BTW, the iPhone clock is precise judging by this app, which is reassuring.)

1TheNightOwl1 ,

Great accuracy, great app!

I use to dial into WWV when working on my clock collection. I’ve been using this app over a year now and rarely use WWV anymore. I have had an occasion or two when the app wouldn’t find the server, but it always had a quick fix. Between this app and the “Cuckoo Clock Calibration” app, I have everything I need to work on my clocks and keep them accurate. Both of these apps are great for hobbyists or professionals. Great job!

App Privacy

The developer, Timo P, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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