# Atomic Clock

> Display the exact time!

Canonical page: [https://chrome-stats.com/d/com.fsphost.atomicclock](https://chrome-stats.com/d/com.fsphost.atomicclock)

## Overview

- **ID:** `com.fsphost.atomicclock`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** FSP Apps
- **Category:** TOOLS
- **Downloads:** 73,070
- **Rating:** 3.90 / 5 (238 ratings)
- **Version:** 3.1
- **Last updated:** 2026-04-28
- **First published:** 2015-08-28
- **Publisher country:** DE
- **Size:** 17 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.fsphost.atomicclock)
- **Website:** [https://fsphost.com/](https://fsphost.com/)
- **Privacy policy:** [https://fsphost.com/privacy\_policy.html](https://fsphost.com/privacy_policy.html)

## Description

Atomic Clock is a Chrome extension designed to display the exact current time with exceptional precision. It supports both 24-hour and AM/PM formats and can display milliseconds for high accuracy. The extension allows users to adjust the display refresh rate to conserve battery life and supports both landscape and portrait orientations for flexible use.

For advanced users with root privileges, Atomic Clock can automatically synchronize your device's time and date using NTP servers, ensuring the highest time accuracy. The extension requires internet connectivity for synchronization and adapts to various network conditions for reliable performance. Its simple tap-to-hide controls enhance user experience without cluttering the display. Whether it's for birthdays, daylight saving adjustments, or New Year's Eve, Atomic Clock offers a straightforward and precise timekeeping solution.

## Rankings

- #255,311 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.WAKE_LOCK`
- `com.fsphost.atomicclock.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.gms.permission.AD_ID`

## Review summary

Users generally praise Atomic Clock for its precision and simplicity, finding it useful for professional and personal use. However, multiple reviews highlight connectivity and server stability issues, unremovable ads, app size concerns, and occasional accuracy and crash problems. Overall, it is seen as a good app for exact timekeeping but could improve stability, ad experience, and size optimization.

### Pros

- Provides precise time synchronization, useful for setting watches exactly to the second.
- Simple and easy to use, serving the core function effectively.
- App works well compared to alternatives; some users find it reliable.
- Suitable for professional purposes, such as drone flying.
- Users appreciate the app despite ads, indicating the core functionality is valuable.

### Cons

- Connectivity issues with the server leading to problems staying connected.
- App size is relatively large compared to similar apps, causing concerns for users tight on space.
- Advertisements are not removable, negatively impacting user experience.
- Some crashes reported, especially on older Android versions like 2.3.6.
- Accuracy concerns where the app time differs significantly from a physical atomic clock.

## Similar extensions and apps

- [AtomicClock: Exact NTP Time](https://chrome-stats.com/d/partl.atomicclock) — 606,436 users, 4.73 / 5
- [Atomic Clock & Watch Accuracy](https://chrome-stats.com/d/net.hubalek.android.apps.atomic_clock_watch_accuracy_tool) — 471,521 users, 4.82 / 5
- [Golden Time](https://chrome-stats.com/d/com.revercode.klock) — 737 users
- [Atomic Time - NTP Clock Sync](https://chrome-stats.com/d/com.twiegold.atomictime) — 189,387 users, 4.84 / 5
- [Ora Esatta](https://chrome-stats.com/d/cloud.oraesatta.app) — 605 users
- [DigiClock](https://chrome-stats.com/d/com.agv.digiclock) — 22 users
- [Digital Clock](https://chrome-stats.com/d/com.dzlabs.digitalclock) — 77 users
- [Floating clock - teleprompter](https://chrome-stats.com/d/com.fullstack.desktopClock) — 975 users
- [Atomic Dial](https://chrome-stats.com/d/com.theatomicdial.app) — 8 users
- [NanoClockX](https://chrome-stats.com/d/com.nanoclockx) — 16 users
- [Momentix: Huge Digital Clock](https://chrome-stats.com/d/com.werhal.atomicdigitalclock) — 14,911 users, 4.88 / 5
- [12-hour world clock](https://chrome-stats.com/d/com.a50webs.intelnav.worldtime) — 13,356 users, 3.57 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/com.fsphost.atomicclock)