AtomicClock: Exact NTP Time

2.1.21

Timo Partl

4.72

17,056 reviews

500,000+
Downloads

Free

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

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4.72 · 17,056 reviews · 500,000+ downloads

iOS version

AtomicClock: NTP Clock provides precise, NTP-synced time from internet servers, presenting both analog and digital clock views. It supports UTC/local time, multiple clock faces, and a customizable home screen widget, with 500,000+ total downloads and 3.8K in the last 30 days.

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 3.8 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 4.60 MB. The latest version available is 2.1.21. The last update was on June 30, 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	3.8 thousand
Rating	4.72 based on 17 thousand ratings
Ranking	Not ranked
Version	2.1.21
APK size	4.60 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 Exact Seconds Server Wall Precise Reference Local Ticking Technical Picture Clock Time Ntp Utc Servers Screen Atomic Widget Set Analog Digital Features Customizable Hour

Keywords missing from this app

App Alarm World Home Wallpaper Display Date Night Accuracy Clocks Recent Timer Color Widgets Colors Live Watch Accurate Weather Show Style Choose Customize Battery Device Mode Beautiful Minor Options Internet Designed Support Zones Position Background Styles

Google Play Rating history and histogram

14K

1.8K

330

170

440

Downloads over time

AtomicClock: Exact NTP Time has been downloaded 600 thousand times. Over the past 30 days, it averaged 130 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

★★★★★ Rupert Reynolds · Jan 18, 2026

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

★★★★★ 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.

★☆☆☆☆ 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.

★☆☆☆☆ William · Dec 26, 2025

Still 1 star after 6 years due to inflated cost

★☆☆☆☆ 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 13 permissions and is using 16 libraries.
Show details

Trust & Safety: The app requests a mix of network, foreground service, advertising ID, and license-check permissions (including ACCESS_NETWORK_STATE, INTERNET, FOREGROUND_SERVICE, READ_BASIC_PHONE_STATE, and AD_ID-related permissions), plus a DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION. This permission set is typical for time utilities and aligns with standard safety practices, with no indications of unusual data collection beyond common ad-identification usage.

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