Comparison

Atomic Clock PRO vs PrintingCalendar

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

This app provides highly accurate time by syncing with official atomic clock servers. Customize your display with digital or analog views, personal backgrounds, and adjustable sizes. It's perfect for precise timekeeping, travel, or as a personalized desk clock.

Highlights
  • Atomic clock time synchronization
  • Digital and analog display options
  • Customizable backgrounds
  • Adjustable clock size
  • Automatic time zone recognition
  • Screen always on option
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

PrintingCalendar

Easily print your monthly calendar to manage studies, goals, and schedules on paper. The app offers a streamlined process for generating printable calendar views, ideal for those who prefer physical planning.

Highlights
  • Printable monthly calendar generation
  • Schedule and goal management on paper
  • Simple and minimal user interface
  • Specify year and month for printing
  • Direct writing on printed calendar
Features
Read full description

Easy for everyone! You can print your calendar! Manage your studies, goals, etc. by writing directly on paper! 1、Specify year and month. 2、Press the print review button. 3. Press the mark in the lower left corner. Press the print button. That's all! We've kept the operating area to a minimum, so we hope you'll make the most of it!

Screenshots

Atomic Clock PRO4 screens
PrintingCalendar4 screens

Verdict

The call

The clearest difference is rating: Atomic Clock PRO at 4.7 against PrintingCalendar's 4.1. Atomic Clock PRO also leads on ratings volume (10K vs 7) and review sentiment (73% vs 50%). PrintingCalendar's advantage is update cadence (every 2 weeks vs every 4 months). On price, ads, in-app purchases and monetization model 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 PrintingCalendar sells 1 one-off in-app purchase. 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 4.1. 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 point the same way: 73% of Atomic Clock PRO's written reviews are positive against 50% of PrintingCalendar's.

UpkeepUpdate frequency

Atomic Clock PRO ships an update every 4 months, PrintingCalendar every 2 weeks. Both last shipped on November 14, 2026.

Scorecard4 real differences · 6 level
Atomic Clock PRO versus PrintingCalendar: the parameters behind the verdict, then further details
ParameterAtomic Clock PROPrintingCalendar
PriceFreeFree
Rating4.7 (10K ratings) — better4.1 (7 ratings)
Positive reviews72.9% of reviews — better50.0% of reviews
Number of ratings10K — better7
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size6 MB8 MB
Age rating4+4+
DeveloperBrachmann Online Marketing GmbH & Co. KGryo muranaka

Customer experience

Atomic Clock PRO

All ratings10,230 ratings
Positive92.3%
Neutral3.5%
Negative4.2%
Written reviews425 reviews
Positive72.9%
Neutral5.9%
Negative21.2%

PrintingCalendar

All ratings7 ratings
Positive71.4%
Neutral14.3%
Negative14.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

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

PrintingCalendar

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
1 purchases

PrintingCalendar

One-time1
  • Premium features$12.99

Questions

Is Atomic Clock PRO free?
Atomic Clock PRO is free to download, with in-app purchases available.
Is PrintingCalendar free?
PrintingCalendar is free to download, with in-app purchases available.
Which has better reviews, Atomic Clock PRO or PrintingCalendar?
Atomic Clock PRO is rated higher. Atomic Clock PRO averages 4.7 out of 5 from 10K ratings, while PrintingCalendar averages 4.1 from 7 ratings.
Do Atomic Clock PRO or PrintingCalendar have ads?
Both Atomic Clock PRO and PrintingCalendar show ads.
Which is updated more often, Atomic Clock PRO or PrintingCalendar?
Atomic Clock PRO ships an update every 4 months, and PrintingCalendar every 2 weeks. Most recently, Atomic Clock PRO was updated on November 14, 2026 and PrintingCalendar on November 14, 2026.

Other comparisons