Comparison

Atomic Clock PRO vs Market Clock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Atomic Clock PRO

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.

Highlights
  • Exact time from atomic clock
  • Automatic time zone recognition
  • Customizable background images
  • Digital and analog clock modes
  • Optional sound alerts
  • Color customization
Features
Read full description

Get accurate time on your iPhone and iPad by syncing with an official atomic clock time server. Download now for free! If you want exact time, a precise time reference, or an easy-to-read clock display, this app is designed for that. It automatically recognizes your time zone, lets you use one of your own photos as the background, and lets you switch between a digital display and a classic analog clock with a simple swipe. It is ideal as a personalized desk clock, a reliable travel companion, an everyday reference clock, or when you need exact time to set a mechanical watch accurately. Overview: - Accurate and precise time synced from an official atomic clock time server - Automatically recognizes your time zone and shows the current local time - Choose digital, analog, or combined analog and digital clock displays - Swipe to switch between clock displays - Resize the digital clock for a larger or smaller display - Includes time (hours, minutes, and seconds), date, and day of the week (optional) - Optional sound every second or every minute - Change clock and background colors - Use your own photos as background images - Choose atomic clock sync or your device's system clock - Option to keep the screen awake while the app is open - Works in portrait and landscape mode - For iPhone and iPad Helpful for: - A personalized desk clock at home or at work - Getting the correct local time while traveling - Setting a mechanical watch accurately - A clear reference clock when you want accurate, easy-to-read time PLEASE NOTE: You can switch between the analog and digital clock by swiping left or right across the clock. Disclaimer: Please note that whilst all reasonable care has been taken to make this application as accurate as possible we can not guarantee 100% accuracy. Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Market Clock

Stay informed about global financial market trading hours and holidays. This app provides a consolidated view of market openings, closings, and upcoming events, replacing outdated physical calendars. Receive timely notifications to manage your trading strategy effectively.

Highlights
  • Global market trading hours
  • Holiday and event calendar
  • Clock, calendar, and timeline views
  • Customizable notifications
  • Support for equities, options, futures, and FX
Features
Read full description

Market Clock brings global market hours, holidays, and key events together in one simple, reliable app. Built natively for iPhone, it gives traders and support teams a clear, real-time view of what’s happening across financial markets so you always know what’s open, what’s closed, and why. Instead of relying on static calendar cards that quickly become outdated, Market Clock keeps everything up to date automatically. It presents market schedules in a consistent, easy-to-read format, making it faster to track multiple exchanges and stay ahead of upcoming holidays and events. With access to a wide range of global markets, the iPhone app includes powerful features to help you stay informed and in control: - Personalise your view with a custom selection of markets. - See live market status and local time at a glance. - Get timely notifications for holidays and events: one week ahead, one day before, and on the day. - Browse upcoming events across all markets in a unified calendar. - Explore market hours with a scrollable, zoomable timeline and adjustable time zone. - Set custom alerts for specific market phases. Whether you’re monitoring a single exchange or tracking activity around the world, Market Clock helps you stay one step ahead of the market. Market Clock uses a simple subscription to keep your data accurate and up to date, with continuous updates to market hours, holidays, and newly supported markets. Track one market for free, or upgrade to unlimited markets for just $0.99 USD per month. Payment will be charged to your Apple ID account at the confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Any unused portion of a free trial will be forfeited if you purchase a subscription. For more information, see our terms of service at https://www.market-clock.com/terms/ and privacy policy at https://www.market-clock.com/privacy/.

Screenshots

Atomic Clock PRO4 screens
Market Clock4 screens

Verdict

The call

The clearest difference is rating: Atomic Clock PRO at 4.7 against Market Clock's 3.7. Atomic Clock PRO also leads on ratings volume (10K vs 7). Market Clock's advantage is ads (none vs shown). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Atomic Clock PRO sells 2 in-app purchases, starting at $1.99 per month and Market Clock sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Atomic Clock PRO holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: Atomic Clock PRO has 10K ratings behind it against 7, so its average is the more settled of the two. Written reviews split almost evenly too, at 73% and 73% positive.

UpkeepUpdate frequency

Atomic Clock PRO ships an update every 3 months, Market Clock every 4 months. The most recent releases landed on October 15, 2026 and September 9, 2026 respectively.

Scorecard3 real differences · 7 level
Atomic Clock PRO versus Market Clock: the parameters behind the verdict, then further details
ParameterAtomic Clock PROMarket Clock
PriceFreeFree
Rating4.7 (10K ratings) — better3.7 (7 ratings)
Positive reviews73.0% of reviews — better72.7% of reviews
Number of ratings10K — better7
Update frequencyEvery 3 months — betterEvery 4 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.6 — better16.6
Further details — not scored
Size6 MB4 MB
Age rating4+4+
DeveloperBrachmann Online Marketing GmbH & Co. KGBenjamin Smith

Customer experience

Atomic Clock PRO

All ratings10,111 ratings
Positive92.3%
Neutral3.5%
Negative4.2%
Written reviews422 reviews
Positive73.0%
Neutral5.9%
Negative21.1%

Market Clock

All ratings7 ratings
Positive57.1%
Neutral14.3%
Negative28.6%
Written reviews11 reviews
Positive72.7%
Neutral9.1%
Negative18.2%

Bugs and requests

Atomic Clock PRO

Reported bugs

3 issues
  • Second hand occasionally runs in reverse
  • Digital clock display cuts off on some devices
  • Inconsistent behavior when switching between clock types

Requested features

3 requests
  • Customizable clock face options
  • Ability to set widget on home screen
  • Sync with system clock to automatically update time

Market Clock

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Atomic Clock PRO

Subscriptions1
  • Premium$1.991 Month
One-time1
  • Remove Ads$5.99
2 purchases

Market Clock

Subscriptions2
  • Premium Market Data (1 Month)$0.991 Month
  • Premium Market Data (1 Year)$9.991 Year

Questions

Is Atomic Clock PRO free?
Atomic Clock PRO is free to download, with in-app purchases available.
Is Market Clock free?
Market Clock is free to download, with in-app purchases available.
Which has better reviews, Atomic Clock PRO or Market Clock?
Atomic Clock PRO is rated higher. Atomic Clock PRO averages 4.7 out of 5 from 10K ratings, while Market Clock averages 3.7 from 7 ratings.
Do Atomic Clock PRO or Market Clock have ads?
Atomic Clock PRO shows ads; Market Clock does not.
Which is updated more often, Atomic Clock PRO or Market Clock?
Atomic Clock PRO ships an update every 3 months, and Market Clock every 4 months. Most recently, Atomic Clock PRO was updated on October 15, 2026 and Market Clock on September 9, 2026.

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