Atomic Clock & Watch Accuracy

3.1.8

Tomas Hubalek

4.81

16,834 reviews

100,000+
Downloads

Free

Adjust your watch with Atomic (NTP) time clock and measure its accuracy

Atomic Clock & Watch Accuracy Screenshot 1 of 9

Atomic Clock & Watch Accuracy Screenshot 2 of 9

Atomic Clock & Watch Accuracy Screenshot 3 of 9

Atomic Clock & Watch Accuracy Screenshot 4 of 9

Atomic Clock & Watch Accuracy Screenshot 5 of 9

Atomic Clock & Watch Accuracy Screenshot 6 of 9

Atomic Clock & Watch Accuracy Screenshot 7 of 9

Atomic Clock & Watch Accuracy Screenshot 8 of 9

Atomic Clock & Watch Accuracy Screenshot 9 of 9

Pros & Cons

Dual functionality: time sync via NTP and wristwatch tracking
CSV export for data analysis
Share accuracy charts with friends
Free core features with optional premium upgrade

Lacks a dedicated digital screen/widget or on-device display features that some competitors offer
No built-in digital/analog clock widget or extensive display customization compared to some rivals

About Atomic Clock & Watch Accuracy

Atomic Clock & Watch Accuracy is a tools app developed by Tomas Hubalek.

Download Statistics

Atomic Clock & Watch Accuracy has been downloaded 460 thousand times. In the last 30 days, the app was downloaded 2.1 thousand times.

User Ratings

Atomic Clock & Watch Accuracy is rated 4.81 out of 5 stars. The rating is based on 17 thousand ratings.

App Information

Atomic Clock & Watch Accuracy is FREE to download. The APK download size is 31.56 MB. The latest version available is 3.1.8. The last update was on May 27, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play June 2018.

Description

This app has two main features:

More data about Atomic Clock & Watch Accuracy

Price	Free to download
Total downloads	460 thousand
Recent downloads	2.1 thousand
Rating	4.81 based on 17 thousand ratings
Ranking	Not ranked
Version	3.1.8
APK size	31.6 MB
Number of libraries	35
Suitable for	Everyone
Ads	Contains ads

App Performance Report

Get a detailed PDF report for Atomic Clock & Watch Accuracy with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Alternative downloads for the Atomic Clock & Watch Accuracy app

Atomic Clock & Watch Accuracy compared with similar apps

Common keywords of similar apps

Adjust Track Wristwatch Watches Functionality Protocol Helpful Share Picture Shown Chart Paid Version Time Accuracy App Atomic Clock Ntp Servers Free Watch Exact Features Show

Keywords missing from this app

Digital Screen Display Analog Set Phone Widget Hour Battery Date Recent Lock Accurate World Wallpaper Night Alarm Flip Seconds Clocks Add Sync Color Huge Colors Utc Server Choose Background Easily Reference Customize Atomicclock Internet Options Face Device Full

Google Play Rating history and histogram

15K

1.1K

230

410

Downloads over time

Atomic Clock & Watch Accuracy has been downloaded 460 thousand times. Over the past 30 days, it averaged 69 downloads per day.

Changelog of Atomic Clock & Watch Accuracy

Show changelog

Developer information for Tomas Hubalek

Tomas Hubalek

support@hubalek.net

Website

Legal name:

Address:

Phone number:

Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.

I'm the developer of this app

Comments on Atomic Clock & Watch Accuracy for Android

★★★★★ Jonathan Graham · Oct 13, 2025

The best app I've found for tracking watch accuracy over time. Simple to use, and doesn't require you to wait for the top of the minute like other apps.

★★★★★ Francesco Memet · Jan 11, 2026

Excellent. I have a watch which has an accuracy of +/- 1 second every 100000 years. Linked to an atomic clock. It's good to check it, every now and then to see its keeping in sync. And this is just the app to use.

★★★★★ Mark D · Apr 27, 2026

I regularly use this to set mechanical watches. The countdown sound is very helpful

★☆☆☆☆ ABJ photography & video · Nov 19, 2025

Not even tried this data grabber app. Instead of accept all there should be an option to deny all

★★☆☆☆ Ian Gourlay · Dec 11, 2025

I bought a copy of this fairly useful app, yet its current version after a few seconds of being launched, obscures the lower half of the screen with adverts. I suggest that you avoid its use, as the writer is clearly motivated to ransom its access and usability to repeat cash demands to restore app usability. There are other apps for monitoring watch accuracy (including an excellent simple telegrapher) and those have my recommendation over this one, now being uninstalled in disgust.

★☆☆☆☆ Nicholas Seale · Nov 8, 2025

Ad filled the screen and covered a settings button. Can't set custom ntp servers

Google Play Rankings for Atomic Clock & Watch Accuracy

This app is not ranked

Technologies used by Atomic Clock & Watch Accuracy

Atomic Clock & Watch Accuracy is requesting 15 permissions and is using 35 libraries.

Permissions

Network communication

view network connections, full network access, Google Play billing service, Google Play license check, receive data from Internet

Your accounts

read Google service configuration

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.FOREGROUND_SERVICE, android.permission.POST_NOTIFICATIONS, com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE, com.google.android.gms.permission.AD_ID, net.hubalek.android.apps.atomic_clock_watch_accuracy_tool.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Ad network libraries

AdMob

Facebook Audience Network Open Measurement Android Library Icon

Open Measurement Unity Ads Android Library Icon

Unity Ads

Ironsource Pangle Android Library Icon

Pangle

InMobi

Mintegral

Social libraries

TikTok open SDK

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Android Jetpack Annotations Android Library Icon

Android Jetpack Annotations Firebase Android Library Icon

Firebase

Android Jetpack Widgets Android Jetpack AppCompat Android Library Icon

Android Jetpack AppCompat AndroidX Activity Android Library Icon

AndroidX Activity Android Jetpack Media Android Library Icon

Android Jetpack Media Google Cloud Messaging (GCM) Android Library Icon

Google Cloud Messaging (GCM)

AndroidX Local Broadcast Manager AndroidX App Startup Android Library Icon

AndroidX App Startup Android WorkManager Android Library Icon

Android WorkManager AndroidX Widget ViewPager2 Android Library Icon

AndroidX Widget ViewPager2 AndroidX Emoji / Emoji2 Android Library Icon

AndroidX Emoji / Emoji2 AndroidX ProfileInstaller Android Library Icon

AndroidX ProfileInstaller Chromium Android Library Icon

Chromium

Picasso

AndroidX WebKit AndroidX Preference Android Library Icon

AndroidX Preference Google Protocol Buffers Android Library Icon

Google Protocol Buffers Jetpack WindowManager Android Library Icon

Jetpack WindowManager Jetpack DataStore Android Library Icon

Jetpack DataStore ByteDance APM Insight Android Library Icon

ByteDance APM Insight AndroidX Credentials Android Library Icon

AndroidX Credentials kotlinx-datetime Android Library Icon

kotlinx-datetime

Top new apps Apps on sale Today's trending apps Apps other people are watching Popular Tools Apps

AppBrain is a directory focused on discovering great apps and games. We give statistics, rankings and search options that Google Play and the App Store don't have. All trademarks are owned by their respective owners. AppBrain doesn't offer APKs or binaries, and always lets users install the official version from Google Play or the App Store.

More apps