AtomicClock: NTP Time

AtomicClock: NTP Time

Exact time from precise clocks

5.4K ratings
235 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • July 25, 2018
  • June 4, 2026

Features

AtomicClock: NTP Time screenshot #1 for iPhone
AtomicClock: NTP Time screenshot #2 for iPhone
AtomicClock: NTP Time screenshot #3 for iPhone
AtomicClock: NTP Time screenshot #4 for iPhone
AtomicClock: NTP Time screenshot #5 for iPhone
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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

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What's New in AtomicClock

3.6.22

June 4, 2026

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

1

In-App Purchases

$6.99

Lifetime Pro Version

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User reviews

Just works!

Been using for years and decided to pay up…
It does just what it’s supposed to… great for setting clocks it is!!!

I like the split second display.

Split second display is desirable. I used radio timing in the 1960’ while in the USAF. So useful that a Cesium-beam frequency standard was flown regularly to our sites. I don’t NEED it, but enjoy it. Thank you.

Useless app

I purchased this app to use on the top of my phone while I’m in the background working and I’m not able to do that. I got a unprofessional message from one of the developer, which is not something of a professional company. I simply requested a refund and have not received it. I will all install your app as you requested, but please assist me with my refund.
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Useless app

I need to be able to toggle my clock to the top of my iPhone and I can’t. Unless I’m able to do that I wasted my money purchasing this app.

Great iPhone app for working with radio-controlled watches

This app has the most useful handset designs and display options for the iPhone. I use it to gauge timekeeping for all my watches. And I use it in conjunction with the Clockwave and Junghans apps for setting radio-controlled watches. atomic-clock apps I’ve seen for iPhones. I use this many times every day. It’s a keeper!!!
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Developer apps

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.