Best Atomic Clock Free Apps

222+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated July 2026

With an average user rating of 4.6โ˜…, the atomic clock free category is one of the App Store's strongest. Browse all 222+ apps we track, sorted so the most loved ones surface first.

Top Picks for Atomic Clock Free

AtomicClock: NTP Time#2

AtomicClock: NTP Time by Timo Partl

Exact time from precise clocks
Strong Contender
๐Ÿ”ง Utilities
4.8๐Ÿ˜Š(5.4K ratings)
FreeAdsIn-App Purchases
AtomicClock: NTP Time screenshot 1
AtomicClock: NTP Time screenshot 2
AtomicClock: NTP Time screenshot 3
AtomicClock: NTP Time screenshot 4
AtomicClock: NTP Time screenshot 5

This app displays the exact current time synchronized with NTP servers, offering a customizable clock view for precise time checks. It's ideal for setting watches, verifying timestamps, or comparing local and network time.

What We Love

  • ๐Ÿš€ Accurate time
  • ๐Ÿ‘ Highly customizable
  • ๐Ÿš€ Precise to the second
  • ๐Ÿ‘ Easy to use

Room to Improve

  • ๐Ÿ› Server connection issues
  • ๐Ÿ” Limited time zone options
  • ๐Ÿ’ฐ Ads diminish clock view
Atomic Clock PRO#3

Atomic Clock PRO by Brachmann Online Marketing GmbH & Co. KG

Exact Time Digital and Analog
Worth Considering
๐Ÿ”ง Utilities
4.7๐Ÿ˜(10K ratings)
FreeAdsIn-App Purchases
Atomic Clock PRO screenshot 1
Atomic Clock PRO screenshot 2
Atomic Clock PRO screenshot 3
Atomic Clock PRO screenshot 4
Atomic Clock PRO screenshot 5
Atomic Clock PRO screenshot 6

Get the most accurate time from an official atomic clock server. This app automatically detects your time zone and allows custom backgrounds. Easily switch between digital and analog clock displays with a swipe.

What We Love

  • โญ Accurate time display
  • ๐Ÿ“Ÿ Useful for timing events
  • ๐Ÿ•ฐ๏ธ Helpful for setting other clocks
  • ๐Ÿ” Large, easy-to-read clock face

Room to Improve

  • ๐Ÿ’ธ Subscription model for ad-free version
  • ๐Ÿ“ข Excessive advertisements
  • ๐Ÿ” Small font for seconds display

More Atomic Clock Free apps to explore

4
Atomic Clock (Gorgy Timing)
Atomic Clock (Gorgy Timing)
Atomic Clock (Gorgy Timing)
The classic par excellence
$1.99

This app provides ultra-precise time by syncing with atomic time servers. It features a customizable display mimicking professional studio clocks, with advanced alarm functions and various visual themes. Designed for accuracy and usability, it's ideal for professionals and enthusiasts alike.

Syncs with atomic time serversProfessional studio clock displayCustomizable alarm with snooze
๐Ÿ”ง Utilities
(4.8K)
free with in-app purchases
5
Clock Seconds
Clock Seconds
Clock Seconds
Largest Clock with seconds
Free

A highly accurate and customizable digital clock that fills your screen. Offers adjustable colors, sizes, and 12/24 hour formats. Designed for minimal battery usage.

Largest digital clock displayAccurate atomic time comparisonCustomizable colors and dimensions
๐Ÿ”ง Utilities
(4)
free with in-app purchases
6
Flip clock - no ads
Flip clock - no ads
Flip clock - no ads
Digital Clock&Nightstand clock
Free

A digital clock app featuring a unique page-turning animation and customizable backgrounds. It includes white noise sounds, hourly chimes, and a timer for enhanced functionality. Personalize your display with various skins, colors, and animations.

Page-turning digital clock animation123 White Noise SoundsCustomizable skins and colors
๐ŸŒŸ Lifestyle
(4.1K)
subscription
7
World Clock Time Zone Widgets
World Clock Time Zone Widgets
World Clock Time Zone Widgets
Timezone Converter Digital UTC
Free

Easily track the time in multiple cities worldwide with customizable analog or digital clock widgets. Get instant access to local times from your Home Screen, Lock Screen, or Dynamic Island. Includes a conversion tool for comparing times and managing schedules across different zones.

Analog and digital clock displaysSearch and manage 10,000+ citiesCustomizable city names
โœˆ๏ธ Travel
(22K)
free with in-app purchases
8
The Clocks: Alarm, World Clock
The Clocks: Alarm, World Clock
The Clocks: Alarm, World Clock
Genuine Flip, Digital, Analog
Free

This app offers a variety of clock styles including flip, digital, and analog. It features customizable alarms with music options, a world clock for multiple locations, and several user-friendly controls for brightness, touch lock, and flashlight activation.

Flip, Digital, and Analog clock typesIn-app music alarmsWorld clock with 500+ cities
๐Ÿ”ง Utilities
(14K)
free with in-app purchases
9
DClock - Digital Flip Clock
DClock - Digital Flip Clock
DClock - Digital Flip Clock
Time Widgets & Floating Clock
Free

This app provides a visually appealing digital flip clock with a minimalist design and customizable themes. It offers useful widgets for your home screen, a floating clock option, and integrated tools like a Pomodoro timer and white noise generator to aid focus. It can also display health data like step count.

Minimalist flip clock designiOS 14 widgetsCustomizable clock themes
๐Ÿ” Reference
(7.6K)
free with in-app purchases
10
Clock โ€“ Simple & Customizable
Clock โ€“ Simple & Customizable
Clock โ€“ Simple & Customizable
A minimalistic 24h clock app
Free

This app displays the time with a minimalistic design, utilizing the full screen. It offers extensive customization for time format, including 12/24 hour, leading zeros, and seconds precision. Screen brightness can be adjusted by swiping, and screen dimming can be prevented.

Full-screen displayCustomizable time format (12/24hr, seconds)Adjustable screen brightness
๐Ÿ”ง Utilities
(117)
free
11
Digital Clock - Bedside Widget
Digital Clock - Bedside Widget
Digital Clock - Bedside Widget
Display for nightstand or desk
Free

This app provides a clear and attractive LED digital clock display. It's ideal for use on a nightstand or desk, offering customizable options for time format and visibility of weekdays and dates.

Beautiful LED digital display12/24 hour mode switchingShow/hide weekdays
๐ŸŒŸ Lifestyle
(1.2K)
free with in-app purchases
12
ClockPhone big digital clocks
ClockPhone big digital clocks
ClockPhone big digital clocks
Alarm clock, timer, widget
Free

This app offers a stylish and functional digital clock with advanced alarm and timer features. Customize its appearance, set flexible alarms with unique dismissal methods, and utilize versatile timers for workouts or productivity.

Advanced alarm with flexible repeatsUnique alarm dismissal methods (NFC, QR, math)Versatile timer for workouts and productivity
๐ŸŒŸ Lifestyle
(28K)
free with in-app purchases
13
My Digital Clock
My Digital Clock
My Digital Clock
Stylish Clock with Themes
Free

Personalize your time with a clean and elegant digital clock. Choose from multiple themes, fonts, and activate night mode for a comfortable display. Optimized for performance and a distraction-free experience.

Multiple clock themesCustom font selectionNight mode support
๐Ÿ”ง Utilities
(7.5K)
free with in-app purchases
14
Atomic Clock โ€“ Precision Time
Atomic Clock โ€“ Precision Time
Atomic Clock โ€“ Precision Time
Network Time Sync & Latency
Free

This utility provides highly accurate time synchronization using NTP, displaying precise time with millisecond detail. It allows comparison with network time, shows sync offset and latency, and offers various clock styles with customization options. It's designed for users needing a reliable, precise reference clock.

NTP-based time synchronizationMillisecond time detailLocal time and UTC display
๐Ÿ“Š Productivity
(4)
free with in-app purchases
15
24Clock - AtomBox
24Clock - AtomBox
24Clock - AtomBox
by Aox.design Co., Ltd.
Free

Experience time in its purest form with a stylish clock featuring ticking sounds and customizable ambient soundscapes. This app encourages mindfulness and finding calm in the present moment, offering a unique perspective on the passage of time.

Stylish clock facesTicking sound effectsAmbient sound creation
๐ŸŒŸ Lifestyle
(1)
free with in-app purchases
16
Analog Clock Widget - Clock SD
Analog Clock Widget - Clock SD
Analog Clock Widget - Clock SD
analog clock for home widget
Free

Personalize your device's home screen with a customizable analog clock widget. Choose from various clock faces, hand styles, and colors to match your aesthetic. Display the date and prevent your device from sleeping while the widget is active.

Customizable clock faceAdjustable hour, minute, and second handsColor customization for hands and background
๐Ÿ“Š Productivity
(2.8K)
free with in-app purchases
17
The Analog Clock
The Analog Clock
The Analog Clock
Simple Analog Clock
Free

This app displays a customizable analog clock on your entire screen. Personalize background and theme colors, and choose between numbers or Roman numerals for the dial. A premium plan unlocks all designs and advanced customization options.

Full-screen analog clock displayAd-free clock viewingLandscape orientation support
๐Ÿ”ง Utilities
(2.1K)
freemium
18
Desk Clock - Analog Clock Face
Desk Clock - Analog Clock Face
Desk Clock - Analog Clock Face
Standby full screen live time
Free

This app transforms your device into a full-screen analog clock with customizable faces. It offers real-time time display, including seconds, on your home screen, lock screen, and even during charging, doubling as a screen saver. Features include smart alarms and hourly reminders.

Full-screen analog clock displayCustomizable clock facesHome screen and lock screen widgets
๐Ÿ“Š Productivity
(22K)
free with in-app purchases
19
Nite Time - a simple night clock for your nightstand with flashlight
Nite Time - a simple night clock for your nightstand with flashlight
Nite Time - a simple night clock for your nightstand with flashlight
by Nick Fanger
Free

A minimalist bedside clock with large, easy-to-read digits designed for low-light conditions. Customize displayed information and brightness. Offers optional upgrades for additional colors and a flashlight feature.

Large, clear digitsLandscape and portrait orientationAdjustable brightness
๐Ÿ”ง Utilities
(262)
free with in-app purchases
20
Radio Wave Sync
Radio Wave Sync
Radio Wave Sync
Sync Radio Controlled Watch
Free

This app helps synchronize radio-controlled watches by simulating time signal waves. It supports various international time signal standards and offers a 'Beast Mode' for faster synchronization. Simply place your watch near your device's speaker and start the process.

Simulates international time wave signalsSupports China, USA, Japan, Germany, and UK signalsUnique 'Beast Mode' for faster sync
๐Ÿ”ง Utilities
(853)
free with in-app purchases