Atomic Clock APK for Android

Used Atomic Clock for Android?

Atomic Clock Analysis

AI Assisted Content · May 12, 2026

Not written by CNET Staff.

Atomic Clock is a free Android application designed to provide users with the most precise time available. Utilizing atomic synchronization technology, the app connects to a server to verify the accuracy of the time displayed. This feature ensures that users can rely on the app for timekeeping, whether as a widget on their home screen or as a standalone application. The app is compatible with devices running Android 4.1 and above, making it accessible to a wide range of users.

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In addition to its primary function of displaying the correct time, Atomic Clock requires a stable internet connection, preferably via Wi-Fi, to perform its synchronization checks. The simple interface allows for easy navigation, and users can choose to add the widget for quick access. Overall, Atomic Clock serves as a useful tool for anyone needing precise timekeeping on their mobile device.

Atomic Clock APK for Android

Used Atomic Clock for Android?

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Full Specifications

GENERAL

Release: October 27, 2019

Latest update: May 12, 2026

Version: 3.1

OPERATING SYSTEMS

Platform: Android

Operating System: Android 15.0

POPULARITY

Total Downloads: 30

Downloads Last Week: 1

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Developer’s Description

This clock displays the most accurate time.

This clock displays the most accurate time.

This app is a perfect choice for the new year 2018 countdown!

Birthday, New Year's Eve or for daylight saving time changes. This app will show you the exact time.

Atomic Clock can set the current time for your automatically in the background (requires root)

Tab the clock to hide and show the control buttons.

Features

- Shows accurate time

- Landscape- and portrait-mode

- Option to show or hide milliseconds

- 2h and am/pm-mode

- Choose display refreshrate. A lower value slower drains the battery

- Automatically sets the current time and date. This option is only available for root users.

To receive the most accurate time, best use this app on a stable wifi or 3G connection.

Technical info:

The time is synchronized using the NTP-protocol and therefore requires internet access.

Atomic Clock uses your mobile only as clock generator, the actual accurate time is received from one of the NTP-servers.