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AtomicClock: NTP Time

AtomicClock: NTP Time

Precision Clock, UTC Reference

5.6K ratings
242 reviews
With Ads
🔧 Utilities
Free
In-App PurchasesWith Ads

Details

Released
July 25, 2018
Updated
October 19, 2026

Features

Developer

Timo Partl
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iphone
ipad
🧾$6.99
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Reviews summary↘︎
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About

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.

✓Precise time from NTP servers
✓Customizable clock faces
✓Select or add time servers
✓Local and UTC views
✓12/24 hour modes
✓Customizable time format
✓Acoustic ticking
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What users say about AtomicClock

Reviews of AtomicClock are mostly positive: the Utilities app is rated 4.8/5 from 5.6K App Store ratings. What users like most: accurate time, highly customizable. Top complaints: server connection issues, limited time zone options. Summarized from real user reviews.

Positive things

  • 🚀Accurate time
  • 👍Highly customizable
  • 🚀Precise to the second
  • 👍Easy to use
  • 👍Helpful for setting watches
  • 👍Great for hobbyists and professionals
  • 👍Excellent time standard for watches
  • 👍Simple and straightforward

Negative things

  • 🐛Server connection issues
  • 🔍Limited time zone options
  • 💰Ads diminish clock view
  • 🔍Lacks some advanced features
  • 🔍Redundant for some users
See all reviews

What's New in AtomicClock

3.6.25

October 19, 2026

• Improved app reliability and compatibility with latest platform components • General performance and stability improvements

1

Subscriptions & In-App Purchases

$6.99

Lifetime Pro Version

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User reviews

Most RecentHighest RatedLowest Rated

Excellent app

My go-to clock app
SQSylvio Quadros

Fraudulent ads

This app has malicious advertisements that try to get you to pay fees to restore your Apple account access. It’s a scam.
Aarcto2

Great for exact time measurements

I need to synchronize timed observations across several different phones (observers) and this app works well.
Tttgg2019

the backbone of my time keeping

it is great to tinker with the ntp servers. lots of fun! this app is the backbone of my time keeping efforts for
my cricket league here on Bermuda
OOdinPancakes

A needed reference point.

It works. No issues detected at present…
TJTop Jimmy23
See 237 more reviews

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User experience

🐞

Reported Bugs

3 issues

Crashes on certain iOS versions

Bug

Occasional freezing of hands

Bug

Countdown timer sound not working

Bug
✨

Requested Features

5 requests

Add GMT/dual time display

Feature

Implement widget support

Feature

Add different second hand sounds

Feature

Allow setting background color to match watch

Feature

Include alarm/timer functionality

Feature

FAQ

Does AtomicClock have ads?

Yes, AtomicClock contains advertisements. These ads may sometimes diminish the clock view, as noted by some users.

What is the user sentiment for AtomicClock?

User reviews are overwhelmingly positive, with users praising its accurate time, high customizability, and ease of use. Some minor cons include occasional server connection issues and ads.

How often is AtomicClock updated?

The app was last updated on June 4, 2026, with version 3.6.22. Frequent updates indicate ongoing development and support.

What devices does AtomicClock support?

AtomicClock is available for iPhone, iPad, and iPod touch devices, making it accessible to a wide range of Apple users.

Is AtomicClock suitable for children?

AtomicClock has an age rating of 4+, indicating it is suitable for children and does not contain inappropriate content.

Can I set my own time servers in AtomicClock?

Yes, AtomicClock allows you to choose from public time servers or add your own custom server for synchronization.

Does AtomicClock change my device's system time?

No, AtomicClock displays network time for comparison and does not alter your device's system time.

What are the main benefits of using AtomicClock?

Users find AtomicClock helpful for setting watches precisely, checking timestamps, and timing important moments due to its accuracy and customizable display.