# Digital clock[Simple] vs Atomic Clock PRO

The clearest difference is in-app purchases: Digital clock[Simple] at none against Atomic Clock PRO's 2. Digital clock[Simple] also leads on ads (none vs shown) and rating (5.0 vs 4.7). Atomic Clock PRO's advantage is update cadence (every 3 months vs every 22 months) and ratings volume (10K vs 1). On price and device support there is nothing between them.

Both are free to download. Atomic Clock PRO sells 2 in-app purchases, starting at $1.99 per month. Digital clock[Simple] asks for nothing beyond the download.

Digital clock[Simple] 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 1, so its average is the more settled of the two.

Digital clock[Simple] ships an update every 22 months, Atomic Clock PRO every 3 months. The most recent releases landed on June 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Digital clock[Simple] | Atomic Clock PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/digital-clocksimple/id826277645/reviews)** | [4.7 (10K ratings)](https://appshunter.io/ios/app/atomic-clock-pro/id899090224/reviews) |
| Number of ratings | 1 | **10K** |
| Positive reviews | — | 72.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 22 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 6 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masanao Baba](https://appshunter.io/developer/803806609) | [Brachmann Online Marketing GmbH & Co. KG](https://appshunter.io/developer/682848918) |

## What reviewers say

### Digital clock[Simple]

[App page](https://appshunter.io/ios/app/digital-clocksimple/id826277645)

A straightforward digital clock application designed for simplicity. It displays the current time in a clear, easy-to-read format. Ideal for users who need a no-fuss timekeeping tool.

**Highlights:** Digital time display, Simple interface, Clear readability

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Digital clock[Simple] free?

Digital clock[Simple] is free to download, with no in-app purchases.

### Is Atomic Clock PRO free?

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

### Which has better reviews, Digital clock[Simple] or Atomic Clock PRO?

Digital clock[Simple] is rated higher. Digital clock[Simple] averages 5.0 out of 5 from 1 ratings, while Atomic Clock PRO averages 4.7 from 10K ratings.

### Do Digital clock[Simple] or Atomic Clock PRO have ads?

Atomic Clock PRO shows ads; Digital clock[Simple] does not.

### Which is updated more often, Digital clock[Simple] or Atomic Clock PRO?

Digital clock[Simple] ships an update every 22 months, and Atomic Clock PRO every 3 months. Most recently, Digital clock[Simple] was updated on June 24, 2026 and Atomic Clock PRO on September 23, 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.*