AtomicClock: NTP Time
Super-precise internet time from NTP servers connected to real atomic clocks
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About
Ever wanted to know exact current time to celebrate someone's birthday or New Year's Eve? Or simply to synchronize clocks? AtomicClock provides the accurate time from NTP servers which are getting the time directly from atomic clocks! • current precise time in correct time format • analog & digital clock • choose from different time servers or add own ones • customizable widget with time & date • acoustic ticking & fluid second hand • choose between different clock faces • switch between local time and UTC, 24-hour and 12-hour clock • sync your physical watches & clocks • technical info like round trip time or stratum • Greenwich Time Signal AtomicClock: The most accurate time on Android.
Info
Genre
Tools
Rating
Rated for 3+
Release
Nov 20, 2017
Last Update
Mar 28, 2025
Gallery
Contacts
Timo Partl
Hörnlesweg 8 70794 Filderstadt Germany
Reviews
A Google user
Ok. Was told to never argue with a dummy. It was included. For free. Now its not. Shame. Enough said. Reply. I would have never kept the app. Reply to publisher... Yes. Ive been using the app for months with the widget. Until recently when you killed it unless I pay on top of viewing ads. Shame. made it so you have to pay to use the widget. On top of ads already in the app. Uninstalling.
James van Zyl
It's fantastic to know real accurate clock time. However, I would like to see how much time is lost per year.
Bernard Kasparas
Was great. Now you lose half the screen to Google Ad Services after 4-7 seconds and cannot get rid of it even after 'not interested in this ad' clicks. A clock that you can view for 4 seconds. Forget it. Uninstalled.
A Google user
Excellent NTP app, quite customizable, easy to read while I set my clocks, Retrieve Time option nice, great privacy policy and inexpensive for ad-free. Thanks!
Mantas
Digital clock position is not stable. It flickers. No option to do time re-synchronization. Poor and not accurate display of system and atomic time differences. Edit: I want that display of time diference between system and atomic clock would be more prominent and have more accurate number. Also I want that the app would let me do manual update for atomic time from NTP server. That is what I meant by time re-synchronization. That is my fault that I haven't wrote it with more specificity.
Ron D
This is the coolest clock ever! It has a very precise layout, so I can keep my antiqe cloka set as close to the most accurate time possible. I wish it had a widget that was like the default clock. But that is not a deal breaker, sbecause the digital clock is very nice, and I can?always open the default clock when I am setting my clocks. I don't purchase msny apps, but as soon as I give it a few says to make sure it stays running properly, I plan to buy tbe pro version.
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Nice, and useful. I have it set up with the acoustic ticking plus a time signal every minute, which works as a basic exercise timer. I find it runs consistently 0.7s slower than my phone's clock and two wall-mounted radio-controlled clocks. It does, however, precisely match a third, smaller radio-controlled clock. Since the wall clocks are identical I have a 2 vs 2 competition for accuracy. I have no complaint. The author's other apps seem excellent too.
Crownlodge Limited
A really useful 'app' that I have been using on both mobile phones and PCs for years. Unfortunately, it is no longer available to download from Microsoft Store for Windows 8.1 Mobile or Windows 10 Mobile but, if it is already installed, it will still function correctly - so, if possible do not reset your phone or inadvertently uninstall the app because it will be lost permanently. It is still available on Windows 10 for PCs but Windows 11 will be coming 'on stream' soon, so be prepared!!
A Google user
DACri here: I love the colors to choose from and I wish it had a display widget for my home screen where the clock face can be seen on screen without me having to open the app. Not really sure why I actually need this, as my phone is automatically updated with current time and date even when I cross time zones. Anyway, I like the app. I guess, because it says ATOMIC! I would like the app much better if you had artworks similar to Salvador Dali' painting "Persistence of Time."
Malachi Travestra
This has been my favorite "go to" Atomic Clopck for years and I'm finally having a rare bit of time to write a review. i've never had a problem with this app. It runs smooth as silk, and it functions smooth as silk. What else can I say? I love this app.
A Google user
a very nice app to have. I like having one accurate source for the correct time that is as handy as this one and as easy to navigate. Visually, it is very clean with many options for displaying the time both digital and analog. Another bonus is that it is very small and has never given any me any problems. Good job, developers.