AtomicClock: NTP Clock

Name: AtomicClock: NTP Clock
Rating: 4.7147145 (18207 reviews)
Author: Timo Partl

By: Timo Partl

Exact atomic clock time from NTP servers — UTC clock and clock widget

Features & Capabilities

AtomicClock is a Chrome extension that provides the most accurate current time by connecting to NTP servers synchronized directly with real atomic clocks. Whether you want to celebrate a special moment or perfectly synchronize your clocks, AtomicClock delivers precise time in various formats including analog and digital.

Key features include selecting from multiple time servers or adding your own, toggling between local time and UTC, choosing 12-hour or 24-hour formats, and customizing widgets displaying both time and date. The extension also offers an acoustic ticking sound and a fluid second hand for a realistic clock experience. Additional technical info like round trip time, stratum, and the Greenwich Time Signal are available for enthusiasts and professionals alike. AtomicClock ensures that your timekeeping is exact and reliable right within your browser.

User Growth & Download Statistics

App

By:

Timo Partl

Downloads:

593,471 1.08K

Rating:

4.71

(18,207) 22 new ratings

Version:

2.1.17 Last updated: 2026-04-15

Version code:

136

Creation date:

2017-11-20

Publisher country:

Permissions:

android.permission.READ_BASIC_PHONE_STATE Moderate risk
com.google.android.gms.permission.AD_ID Moderate risk
android.permission.ACCESS_ADSERVICES_AD_ID Low risk
android.permission.ACCESS_ADSERVICES_ATTRIBUTION Low risk
android.permission.ACCESS_ADSERVICES_TOPICS Low risk
android.permission.FOREGROUND_SERVICE Low risk
android.permission.INTERNET Low risk
android.permission.WAKE_LOCK Low risk
com.android.vending.BILLING Low risk
com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE Low risk

Size:

7.12MB

Email:

pa*****@outlook.com

URLs:

Website ,Privacy policy

Full description:

Source:

Google Play Store

Data ingested on:

2026-06-06

Compare stats and ranking:

Ranking

# 89,333 ▼ 226

Other platforms

AtomicClock: NTP Time (v3.6.22)

4.80

(5,418)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:

Timo Partl

Google Play Store

https://play.google.com/store/apps/details?id=partl.atomicclock

Email:

pa*****@outlook.com

Website:

https://timopartl.com/

User Reviews

Users praise AtomicClock for precise, atomic-timed display and its usefulness as a reference tool with customizable widgets and faces. It’s viewed as reliable and worth paying for by many. Repeated negatives focus on intrusive ads, pricing concerns, occasional OS-related glitches, and missing features such as manual sync and AOD support.

Pros

Accurate time displayed and synced to atomic clocks (stays locked to the US Atomic Clock) with sub-second precision.
Very useful as a reference tool with home-screen widgets and the ability to compare device time against multiple time servers; helps set analog watches.
Highly customizable UI with many clock faces, colors, and hand options.
Reliable and well-regarded; many users consider it the best clock app and are happy to pay for the Pro version.
Positive perception of value and quality, with praise for ongoing support and development.

Cons

Intrusive ads, including full-screen pop-ups that cover the clock and disrupt use.
Ads consistently interfere with usability, leading some users to switch to other apps.
Pricing concerns and perceived inflation of Pro features; some users want more options without paying for Pro.
Occasional issues after OS updates (or resets to local time) affecting reliability.
Missing features like manual synchronization and Always-On Display (AOD) support; minor formatting requests (e.g., removing leading zeros) surface as well.

Recent reviews

Still 1 star after 6 years due to inflated cost for an NTP the developer doesn't run in an app that can be vibe coded in 10 minutes. Plus the developer added an annoying DRM that requires you to have play store enabled or it won't work. Pretty obvious what's going on. I'd much rather pirate this app and so would many others.