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 3.1.6

Bugfixes and other improvements

Ratings and Reviews

4.8 out of 5
2K Ratings

2K 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!

Andrew Capo ,


I use this app primarily for setting the time on my Seiko automatic watch every couple days. It is very easy to set my watch to the exact second using this app. I also like all the customization features, the option to enable or disable a ticking noise, and the option to give the seconds hand a smooth sweeping motion instead of a ticking motion.

Ermete3 ,

ios 13

I have an Ipad air 2 with ios 13. the app does not work. the clock stopped and I can't seem to get ir going again. When I installed it the first time it worked perfectly, I would have given it 5 stars. Now I have to settle for 3. Actually I should give it less than 3 stars because the app doesn't work. I think you need to update!!!!!.
This is a follow up on my first review. The clock can’t seem to find a time server. I tried all of them. I run the app on my ipad air 2 and on my iphone 11 pro. They both have the same problem.I have wifi. I can stream movies, but The app can’t find a time server.

Developer Response ,

Does the problem happen repeatedly when launching the app multiple times? There is a chance that some wifi networks filter/block the NTP packages that the app needs to receive in order to show the time. Can you maybe check if this is an issue of your wifi and/or if the app works properly in a different network?


Timo P
45.2 MB

Requires iOS 12.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Albanian, Bulgarian, Czech, Dutch, French, German, Hebrew, Italian, Korean, Polish, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese

Age Rating
In-App Purchases
  1. Pro Version $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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