iPhone Screenshots


***Ultra Precise, Ultra Accurate, Millisecond Atomic Clock Synced***

Includes FREE Apple Watch app to display accurate Second and Centisecond.

Your goal is to remain the most accurate mobile clock on mobile.

The Atomic Clock App displays Milliseconds, and accuracy of your device in millisecond.

V 4.7
down to 38 Millisecond accuracy,
PPS(Pulse Per Second) under a Millisecond 0.050 ms

Detailed features:

- Accuracy down to 1 Millisecond (Without subscription 5 centiseconds)

- Syncing to a network of time reference servers up to 16 in USA for better accuracy(Without subscription 1 server)

- Auto syncing continuously

- Display the device clock(With subscription)

- Show the time difference between the device and the official time(With subscription)

- Reference time for Asia/Europe/USA

- Jump between 2 time zone (Time Zone or local)

- Audio signal per second ON/OFF (PPS)

- 4 different alarm sounds

- Multi push alarms on multi time zones

- Multi time zones alarms

- Up to date Time zone table :
• official time zones
• military time
• aeronautical time
• astronomical time

from V 4.3:

Accuracy of the time is displayed in Milliseconds
A Pulse per Second timer is included
Multiple sources of reference time can be choose

Version 4.2 achieve to be precise at 2 millisecond in every set of 10 sec,(Pulse Per Second, PPS)

What’s New

Version 4.7

-Updates for overall speed improvement (Swift 3)

Ratings and Reviews

2.4 out of 5
17 Ratings

17 Ratings

UMAppleMan ,

iWatch support..

Tried to open the app on my watch today. Claimed that it could not open because it needs an update. Been 2 years since the last update. 4 stars overall but removed 2 stars from this review due to it no longer working on my iWatch.

scnc96 ,

Does not support iPad

The app is great and visually attractive, but it appears to be for iPhone or watch only, as it is portrait mode only. The app cannot change to landscape mode.

To the developer- please include landscape in a future update! I had hoped to use this for a cabinet clock for display purposes, but cannot because of this problem.

markbyrn ,

Still fine but concerned

It’s hard to recommend an app that hasn’t been updated in 2 years but it still works like a champ and in my opinion, still had the best design of the genre.


26.2 MB

Requires iOS 8.2 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2016 AWYSE
In-App Purchases
  1. 1 Year Live Synced Centiscecond Reference Time $3.99


  • Family Sharing

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

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