# Atomic Clock PRO vs Flip clock & clock widget

The clearest difference is ads: Flip clock & clock widget at none against Atomic Clock PRO's shown. Flip clock & clock widget also leads on rating (5.0 vs 4.7). Atomic Clock PRO's advantage is ratings volume (10K vs 3) and iOS requirement (15.6 vs 17). On price, review sentiment, update cadence and in-app purchases 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 Flip clock & clock widget sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Flip clock & clock widget holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Atomic Clock PRO has 10K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 73% of Atomic Clock PRO's written reviews are positive against 69% of Flip clock & clock widget's, so the app with the better star average is not the one people write more warmly about.

Atomic Clock PRO ships an update every 3 months, Flip clock & clock widget every 2 months. The most recent releases landed on September 25, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Atomic Clock PRO | Flip clock & clock widget |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (10K ratings)](https://appshunter.io/ios/app/atomic-clock-pro/id899090224/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/flip-clock-and-clock-widget/id1566706513/reviews)** |
| Number of ratings | **10K** | 3 |
| Positive reviews | **72.7% of reviews** | 68.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 88 MB |
| Requires iOS | **15.6** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) | [境 高](https://appshunter.io/developer/1528847758) |

## What reviewers say

### Atomic Clock PRO

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

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:** macOS Compatibility, Vision Pro 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


### Flip clock & clock widget

[App page](https://appshunter.io/ios/app/flip-clock-and-clock-widget/id1566706513)

This app offers a full-screen desktop clock with a unique page-turning animation to display time. It can be used for study, work focus, desktop beautification, and time planning. The interface is simple and allows theme switching.

**Highlights:** Full-screen page-turning animation, Minimalist design style, White noise for focus, Optional time and date display, 12 and 24 hour modes, Switchable clock themes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Permanent Membership | $2.99 | one-time |
| Lifetime Membership | $5.99 | one-time |


## Frequently asked questions

### Is Atomic Clock PRO free?

Atomic Clock PRO is free to download, with in-app purchases available.

### Is Flip clock & clock widget free?

Flip clock & clock widget is free to download, with in-app purchases available.

### Which has better reviews, Atomic Clock PRO or Flip clock & clock widget?

Flip clock & clock widget is rated higher. Atomic Clock PRO averages 4.7 out of 5 from 10K ratings, while Flip clock & clock widget averages 5.0 from 3 ratings.

### Do Atomic Clock PRO or Flip clock & clock widget have ads?

Atomic Clock PRO shows ads; Flip clock & clock widget does not.

### Which is updated more often, Atomic Clock PRO or Flip clock & clock widget?

Atomic Clock PRO ships an update every 3 months, and Flip clock & clock widget every 2 months. Most recently, Atomic Clock PRO was updated on September 25, 2026 and Flip clock & clock widget on September 18, 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.*