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AtomicClock: NTP Time icon
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AtomicClock: NTP Time

Timo Partl · Utilities · United States store
NOT IN TOP 100 HERE
View on App Store ↗ Instagram card Google Play version →
Revenue a month, worldwide EST
$2.9K
Likely $973 to $8.8K
New ratings
Tracking
Daily counts start building from today
Rating
4.8 of 5
5.6K ratings in this store
Countries it ranks in
0
was 0 on Oct 15, 2026

Revenue

Estimated from the grossing charts of Oct 21, 2026 in the 53 countries we track, and ratings growth on the App Store.

EST. REVENUE / YEAR · WORLDWIDE
$35K
100 new ratings a month on average since launch
EST. LIFETIME DOWNLOADS
195K to 557.1K
Estimated from ratings count
WHERE ITS USERS ARE · SHARE OF RATINGS
  • United States 5.6K ratings57%
  • Germany 2.5K ratings25%
  • United Kingdom 648 ratings7%
  • Canada 329 ratings3%
  • Australia 151 ratings2%
  • Italy 127 ratings1%
  • Japan 117 ratings1%
  • France 101 ratings1%
HOW SURE ARE WE
Not in any grossing chart, so this comes from ratings growth (100 new ratings a month on average since launch): revenue grows with new ratings, more slowly for apps that collect ratings fast. Tested on 418 apps with verified revenue: typically off by about 2 times, and big earners tend to come out low. Countries we don't track (and Google Play in China, which doesn't exist) aren't included, and neither are ads or web payments. Gross revenue before store fees.
RATINGS
5.6K
AVG RATING
4.82
PRICE
Free
AGE
8.2y
LAST UPDATE
3d ago
VERSION
3.6.25
SIZE
17 MB
AGE RATING
4+

Last 29 days

From our daily snapshots of every grossing chart.

DAYS IN A GROSSING CHART
0 / 29
COUNTRIES NOW
0 (was 0)
EST. REVENUE FROM CHARTS, DAILY · BOTH STORES ONLY EST
Show daily values
Sep 24, 2026not in a grossing chart
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Oct 22, 2026not in a grossing chart
Best rank Sep 24, 2026: not ranked. Now: not ranked. Days at zero are days outside every grossing chart.

Money and momentum

Measured from the store, not estimated.

WHAT IT CHARGES
1 purchase listed
  • Lifetime Pro Version$6.99
Top in-app purchases as listed on the App Store, in local prices.
REVIEW MOMENTUM
0.5 reviews / week
  • Trendfalling
  • Recent reviews average4.4 stars
  • Recent 1 and 2 star share12%
From the latest 227 written reviews, covering 3040 days.
RELEASE CADENCE
3 updates in 90 days
  • Typical gap between releases28 days
From the last 25 versions listed on the App Store.
RATING BREAKDOWN
5.6K ratings
5★88%
4★8%
3★2%
2★1%
1★1%

What users want

From the latest 227 reviews on the United States App Store, Jun 27, 2018 to Sep 28, 2026: 12% are 1 or 2 stars. Open a theme to read what people wrote.

WHAT THEY COMPLAIN ABOUT · SHARE OF BAD REVIEWS
Too many ads26%

7 of the 1 and 2 star reviews.

★★★★★ This app has malicious advertisements that try to get you to pay fees to restore your Apple account access.
★★★★★ Advert covers clock unless you pay up.
★★★★★ There is a trial version but it's not usable, because of ads covering the face of the clock.
Price and subscription15%

4 of the 1 and 2 star reviews.

★★★★★ I simply requested a refund and have not received it.
★★★★★ There is a trial version but it's not usable, because of ads covering the face of the clock.
Bugs, things not working11%

3 of the 1 and 2 star reviews.

★★★★★ Had this app for a while and now all of a sudden, it refuses to work
★★★★★ After latest update I believe, today May 14/2019 watch stopped working with sign NO CONNECTION TO SERVER....
Lost data, sync, backup11%

3 of the 1 and 2 star reviews.

★★★★★ This app has malicious advertisements that try to get you to pay fees to restore your Apple account access.
★★★★★ Excessive advertising, deleted app.
Wrong or poor results11%

3 of the 1 and 2 star reviews.

★★★★★ 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…
★★★★★ Werbung arbeitet mit Fake Schließenbuttons die beim Betätigen die Werbung öffnen.
★★★★★ A previously excellent App now rendered useless with forced Ads Do not recommend
No customer support11%

3 of the 1 and 2 star reviews.

★★★★★ All my other apps working. Junk app. Not reliable. Edit: don't have pop up requests for reviews if you don't want reviews. I see that others had the same problem and also got snarky responses.
★★★★★ No response from server IPhone 10.
★★★★★ “No response from Server”.
Worse after an update7%

2 of the 1 and 2 star reviews.

★★★★★ I opened it recently and and it said, "UPDATE NOW".This is a blatant and dishonest scheme to get people to tap on the advertising banner.
★★★★★ After latest update I believe, today May 14/2019 watch stopped working with sign NO CONNECTION TO SERVER....
WHAT THEY ASK FOR
  • I just have one suggestion: please add a louder click every 5 seconds to it similarly to what it does at the start of every minute. 5★, Sep 1, 2025
  • Can you make this work on the Lock Screen? 3★, Jun 26, 2022
  • Wish there was a button to quickly switch between UTC and local time or it could show both even if it was a second line just showing hours and minutes. 5★, Aug 19, 2021
  • If you could please fix this that would be great. 4★, May 13, 2021
WORDS THAT KEEP COMING UP IN BAD REVIEWS
response from server3
WHAT THEY LOVE · SHARE OF GOOD REVIEWS
Accurate, great results17%

32 of the 4 and 5 star reviews.

★★★★★ I need to synchronize timed observations across several different phones (observers) and this app works well.
★★★★★ I use this app to adjust time when we change the time in November and March. And periodically when I notice a clock is not perfectly set. I like each clock set to the exact time. Nice features. I've noticed a few…
★★★★★ I just have one suggestion: please add a louder click every 5 seconds to it similarly to what it does at the start of every minute. Otherwise, this is a very nice and useful clock.
Easy to use14%

26 of the 4 and 5 star reviews.

★★★★★ This makes setting watches for a synced time very easy!
★★★★★ Easy to use, with many features.
★★★★★ The addition of multiple timezones makes setting a GMT/dual time complication simple, and the app is now perfect.
Useful, it helps9%

17 of the 4 and 5 star reviews.

★★★★★ So useful that a Cesium-beam frequency standard was flown regularly to our sites.
★★★★★ This app has the most useful handset designs and display options for the iPhone.
★★★★★ Being able to sync with different time servers is a great feature. This makes setting watches for a synced time very easy! The unlock for premium gives a lot of options. Simple and clean with many options to customize.
Looks great5%

9 of the 4 and 5 star reviews.

★★★★★ Simple and clean with many options to customize.
★★★★★ Accurate Configurable Beautiful
★★★★★ The display is clean and accurate.
Fun, addictive3%

5 of the 4 and 5 star reviews.

★★★★★ I don't NEED it, but enjoy it.
★★★★★ I use this in conjunction with my stratum 1 server to keep all my devices in sync…it's just fun
★★★★★ It is a very good app that I enjoy.

Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.

What users say

Latest reviews, United States App Store.

★★★★★Sep 28, 2026
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.

★★★★★Sep 19, 2026
Great for exact time measurements

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

★★★★★Sep 2, 2026
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

★★★★★Aug 11, 2026
A needed reference point.

It works. No issues detected at present…

★★★★★Aug 10, 2026
Best new Atomic Clock I found on the Internet

While the different features and options are fairly basic, this is the simplest to read, gives you the information you really need, like what time is it so it is now my go to for checking time and setting my analog and mechanical clocks and watches.

★★★★★Aug 4, 2026
Datenschutz

Einfach nur schlecht wieviel hier an Daten weiter gegeben wird, an etliche Stellen. Ich habe fast fünf Minuten gebraucht bis ich alle Anbieter abgelehnt habe. Das für eine Atomuhr ist lächerlich. Alles abgelehnt und wieder deinstalliert

Store screenshots

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App Store ads

Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.

No App Store ads in the EU
None in the last 90 days.

Apple only publishes ads shown in the EU (EU Digital Services Act), with a 7 day delay. An app that advertises only outside the EU shows nothing here.

Growth research

Where this app is buying and earning its users. Each link opens pre filtered.

Meta Ad Library ↗Active Facebook and Instagram adsTikTok Creative Center ↗Top performing TikTok adsTikTok creators ↗Organic videos mentioning the appInstagram ↗Reels and posts under its hashtagYouTube ↗Reviews, tutorials and ShortsDeveloper site ↗Landing page and pricing

ASO keywords

Most repeated terms in the listing. Highlighted ones also appear in the title.

time13atomicclock5clock5ntp4reference4ntp reference3reference time3analog digital3atomicclock displays3server3precise2wall2clocks2local2utc2follow2second2clear2analog2digital2displays2choose2add2view2

What's new in 3.6.25

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

Released Jul 25, 2018. Current version shipped Oct 19, 2026.

Store description

Check precise NTP reference time at a glance. AtomicClock helps you set watches, wall clocks, cameras, and other devices, compare local time with UTC, and follow moments when every second matters. Clear analog and digital time AtomicClock displays current time from NTP servers that reference atomic clocks. Choose a predefined server or add your own, then view local or UTC time in a clean analog or digital clock. Customize your reference clock • Switch between 12-hour and 24-hour time • Customize the time format • Choose from multiple clock faces and hands • Use a smooth, fluid second hand • Add acoustic ticking or the Greenwich Time Signal • Tap the screen to hide information and controls, freeze the display, or mute ticking Details for precise time checks View technical NTP information, including round-trip time and server stratum. Whether you are checking a timestamp, preparing a camera, aligning a wall clock, or setting a watch by hand, the seconds remain clear and easy to follow. AtomicClock is free to use. AtomicClock Pro is available as a one-time purchase with no subscription. It unlocks your preferred clock face, hands, and font, removes ads, and includes upcoming Pro features. AtomicClock displays NTP reference time for comparison and does not change your device’s system time. Results can vary with the selected server, network conditions, and device behavior.

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Prices, ranks and reviews are per country. Revenue above is already worldwide.

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