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

This app has been updated by Apple to display the Apple Watch app icon.

-Updates for overall speed improvement (Swift 3)

Ratings and Reviews

2.7 out of 5
21 Ratings

21 Ratings

jah ray ,

Minute hand is always half a minute behind!

I used to love this app, but now the minute hand is always half a minute behind, so it’s hard to tell at a glance what time it is with any precision. For an app whose very design screams precision, this is just incredible.

I can only guess that it’s not been updated in a few years so it no longer works well in recent iOS versions. If that’s not the case, then it’s a mystery why it now has this major defect.

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.

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.

App Privacy

The developer, Awyse, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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