AtomicClock: Exact NTP Time

2.1.22

Timo Partl

4.72

17,076 reviews

500,000+
Downloads

Free

Precise atomic time — UTC clock, Greenwich Time Signal and clock widget

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iOS version

Pros & Cons

Precise time via selectable NTP servers
UTC/local time switching with flexible formatting
Analog and digital displays with multiple faces
Free core app with optional one-time Pro upgrade for extra customization and ad removal

Lacks built-in weather or world clock features that some competitors offer
Widget accuracy relies on Android system time; to view NTP reference time, open the app

About AtomicClock: Exact NTP Time

AtomicClock: Exact NTP Time is a tools app developed by Timo Partl.

Download Statistics

AtomicClock: Exact NTP Time has been downloaded 600 thousand times. In the last 30 days, the app was downloaded 4.8 thousand times.

User Ratings

AtomicClock: Exact NTP Time is rated 4.72 out of 5 stars. The rating is based on 17 thousand ratings.

App Information

AtomicClock: Exact NTP Time is FREE to download. The APK download size is 4.46 MB. The latest version available is 2.1.22. The last update was on August 5, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play November 2017.

Description

Need the exact time to set a watch, align a wall clock, compare UTC, or catch a moment where seconds matter? AtomicClock shows precise reference time from NTP time servers in a clear analog or digital

More data about AtomicClock: Exact NTP Time

Price	Free to download
Total downloads	600 thousand
Recent downloads	4.8 thousand
Rating	4.72 based on 17 thousand ratings
Ranking	Not ranked
Version	2.1.22
APK size	4.46 MB
Number of libraries	16
Suitable for	Everyone
Ads	Contains ads

App Performance Report

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Alternative downloads for the AtomicClock: Exact NTP Time app

AtomicClock: Exact NTP Time compared with similar apps

Common keywords of similar apps

Atomicclock Picture Pro Precise Signal Reference Custom Server Device Options Color Exact Greenwich Watch Wall Compare Clear Network View Local Manual Checks Fonts Ticking Tap Actions Technical System Customization Time Clock Widget Ntp Utc Servers Atomic Set Seconds Analog Digital Hour Display Home Screen Colors

Keywords missing from this app

App World Wallpaper Date Accurate Features Clocks Mode Accuracy Recent Global Style Widgets Live Easy Show Weather Zone Alarm Track Battery Zones Night Dark Customizable Light Settings Hand Converter International Day Lock Dial Multiple

Google Play Rating history and histogram

14K

1.7K

380

160

440

Downloads over time

AtomicClock: Exact NTP Time has been downloaded 600 thousand times. Over the past 30 days, it averaged 160 downloads per day.

Changelog of AtomicClock: Exact NTP Time

Show changelog

Developer information for Timo Partl

Timo Partl

atomicclockapp@outlook.com

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Comments on AtomicClock: Exact NTP Time for Android

★★★★★ William Hoffman · Nov 19, 2025

Excellent time keeping App!! Definitely the best Clock app I've ever had in 25+ years. Highly recommended! I set all my watches and clocks around my house and at work with this app. Hasn't let me down yet. Great buy. Thanks a million! Will H. 👍🙂🇺🇸❤️

★★★★☆ Kenagain · Oct 31, 2025

Had the free version for a long time and decided to get the paid for version. Found that the paid for one says you can change fonts and font colors, but they don't work as they should. I tried changing the color to red, and it stayed white but changed the font on the widget. If it gets sorted will give it 5 stars.

★★★★★ Rupert Reynolds · Jan 18, 2026

Does exactly what it should--displays *accurate* time from the atomic time standard. Worth paying for, so I did :-)

★☆☆☆☆ Karl Stevens · Jan 2, 2026

I was unable to use it because of the obtrusive ads. Having a popup that takes up the entire screen makes this useless.

★★☆☆☆ James Brown · Jan 4, 2026

The clock gets covered by ads, so it's useless.

★☆☆☆☆ Lawrence Widacki · Sep 20, 2025

I uninstalled the app because of the ads now. This app used to be ad free.

★★☆☆☆ Andy Brownfield · Dec 28, 2025

The app is clean and works well, but the ads pop up and cover most of the clock. It's annoying to use, so I'm installing a different atomic clock app.

Google Play Rankings for AtomicClock: Exact NTP Time

This app is not ranked

Technologies used by AtomicClock: Exact NTP Time

AtomicClock: Exact NTP Time is requesting 14 permissions and is using 16 libraries.

Permissions

Network communication

view network connections, full network access, Google Play billing service, Google Play license check

System tools

prevent phone from sleeping

Extra

android.permission.ACCESS_ADSERVICES_AD_ID, android.permission.ACCESS_ADSERVICES_ATTRIBUTION, android.permission.ACCESS_ADSERVICES_TOPICS, android.permission.ACCESS_LOCAL_NETWORK, android.permission.FOREGROUND_SERVICE, android.permission.READ_BASIC_PHONE_STATE, com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE, com.google.android.gms.permission.AD_ID, partl.atomicclock.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Ad network libraries

None found

Social libraries

None found

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Android Jetpack Annotations Android Library Icon

Android Jetpack Annotations Android Jetpack Widgets Android Library Icon

Android Jetpack Widgets Firebase Android Library Icon

Firebase

Android Jetpack AppCompat AndroidX Activity Android Library Icon

AndroidX Activity Android Activity Saved State Android Library Icon

Android Activity Saved State Android WorkManager Android Library Icon

Android WorkManager AndroidX Emoji / Emoji2 Android Library Icon

AndroidX Emoji / Emoji2 AndroidX ProfileInstaller Android Library Icon

AndroidX ProfileInstaller Chromium Android Library Icon

Chromium

AndroidX Preference Jetpack DataStore Android Library Icon

Jetpack DataStore PairIP Android Library Icon

PairIP

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