# Atomic Clock PRO vs PrintingCalendar

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.

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.

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.

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

## The numbers

| Metric | Atomic Clock PRO | PrintingCalendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (10K ratings)](https://appshunter.io/ios/app/atomic-clock-pro/id899090224/reviews)** | [4.1 (7 ratings)](https://appshunter.io/ios/app/printingcalendar-printable/id1639296709/reviews) |
| Number of ratings | **10K** | 7 |
| Positive reviews | **72.9% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 8 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) | [ryo muranaka](https://appshunter.io/developer/1606480078) |

## What reviewers say

### Atomic Clock PRO

[App page](https://appshunter.io/ios/app/atomic-clock-pro/id899090224)

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:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per month |
| Remove Ads | $5.99 | one-time |

**What reviewers like**

- ⭐ Accurate time display
- 📟 Useful for timing events
- 🕰️ Helpful for setting other clocks
- 🔍 Large, easy-to-read clock face

**What reviewers complain about**

- 💸 Subscription model for ad-free version
- 📢 Excessive advertisements
- 🔍 Small font for seconds display
- 🔀 Difficulty in displaying both analog and digital clocks simultaneously

**Reported bugs**

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

**Requested features**

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


### PrintingCalendar

[App page](https://appshunter.io/ios/app/printingcalendar-printable/id1639296709)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium features | $12.99 | one-time |


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*