AtomicClock: NTP Clock

2.1.21

Timo Partl

4.71

16,989 reviews

500,000+
Downloads

Free

Exact atomic time from NTP servers — UTC clock 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: NTP Clock

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

Download Statistics

AtomicClock: NTP Clock has been downloaded 600 thousand times. In the last 30 days, the app was downloaded 2.6 thousand times.

User Ratings

AtomicClock: NTP Clock is rated 4.71 out of 5 stars. The rating is based on 17 thousand ratings.

App Information

AtomicClock: NTP Clock 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, set a wall clock, compare UTC, or catch a moment where seconds matter? AtomicClock shows precise reference time from NTP time servers in a clean analog and digital

More data about AtomicClock: NTP Clock

Price	Free to download
Total downloads	600 thousand
Recent downloads	2.6 thousand
Rating	4.71 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: NTP Clock app

AtomicClock: NTP Clock 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 Wallpaper Alarm Home Watch Night Display Smart Timer Live Accuracy Accurate World Color Recent Device Beautiful Clocks Customize Date Weather Internet Multiple Choose Mode Colors Synctime Background Easily Stylish Stopwatch Sync Show Free Themes Widgets

Google Play Rating history and histogram

Rating history

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Downloads over time

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AtomicClock: NTP Clock has been downloaded 600 thousand times. Over the past 30 days, it averaged 87 downloads per day.

Changelog of AtomicClock: NTP Clock

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Developer information for Timo Partl

Timo Partl

atomicclockapp@outlook.com

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Comments on AtomicClock: NTP Clock for Android

★★★★★ John McSherry · Jul 5, 2025

It's a good app. I pay for a full version. I have an old school Casio watch. I like to sync my watch to the second. The display is clean and plan. You don't need an atomic watch. Quartz is very accurate as long as you synchronize it.

★★★★☆ 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.

★★★★★ James Sinnott · Jun 21, 2026

Great for Atomic clock geeks. Phone time is always off by a few milliseconds. This app is as close as you can get.

★★★★★ S Crook · Jul 7, 2026

Have used for several years. Great for setting clocks, if you are one of those who just wants accurate time

★☆☆☆☆ Lawrence Widacki · Sep 20, 2025

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

★☆☆☆☆ 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.

★★☆☆☆ 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: NTP Clock

This app is not ranked

Technologies used by AtomicClock: NTP Clock

13 permissions · 16 libraries

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