# AtomicClock vs Mr. Sunset

The clearest difference is price: AtomicClock at Free against Mr. Sunset's $0.99. AtomicClock also leads on update cadence (every 3 weeks vs every 21 months) and ratings volume (5.5K vs 1). Mr. Sunset's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

AtomicClock is free to download; Mr. Sunset costs $0.99 up front. AtomicClock sells 1 one-off in-app purchase. Mr. Sunset asks for nothing beyond the download.

Mr. Sunset holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: AtomicClock has 5.5K ratings behind it against 1, so its average is the more settled of the two.

AtomicClock ships an update every 3 weeks, Mr. Sunset every 21 months. The most recent releases landed on October 14, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | AtomicClock | Mr. Sunset |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.8 (5.5K ratings)](https://appshunter.io/ios/app/atomicclock-ntp-time/id1402993049/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mr-sunset/id1526173851/reviews)** |
| Number of ratings | **5.5K** | 1 |
| Positive reviews | 84.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 21 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 17 MB | 98 MB |
| Requires iOS | 15.0 | **14.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Timo Partl](https://appshunter.io/developer/1387413672) | [Kirk Saathoff](https://appshunter.io/developer/715872917) |

## What reviewers say

### AtomicClock

[App page](https://appshunter.io/ios/app/atomicclock-ntp-time/id1402993049)

This app displays the exact current time synchronized with NTP servers, offering a customizable clock view for precise time checks. It's ideal for setting watches, verifying timestamps, or comparing local and network time.

**Highlights:** Precise time from NTP servers, Customizable clock faces, Select or add time servers, Local and UTC views, 12/24 hour modes, Customizable time format, Acoustic ticking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro Version | $6.99 | one-time |

**What reviewers like**

- 🚀 Accurate time
- 👍 Highly customizable
- 🚀 Precise to the second
- 👍 Easy to use
- 👍 Helpful for setting watches

**What reviewers complain about**

- 🐛 Server connection issues
- 🔍 Limited time zone options
- 💰 Ads diminish clock view
- 🔍 Lacks some advanced features
- 🔍 Redundant for some users

**Reported bugs**

- Crashes on certain iOS versions
- Occasional freezing of hands
- Countdown timer sound not working

**Requested features**

- Add GMT/dual time display
- Implement widget support
- Add different second hand sounds
- Allow setting background color to match watch
- Include alarm/timer functionality


### Mr. Sunset

[App page](https://appshunter.io/ios/app/mr-sunset/id1526173851)

Get precise sunrise and sunset times for any location on Earth. Set custom notifications for these daily events and visualize how day length changes throughout the year with an engaging animation.

**Highlights:** Sunrise and sunset times, Location-based data, Customizable notifications, Day length animation, Global coverage

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AtomicClock free?

AtomicClock is free to download, with in-app purchases available.

### Is Mr. Sunset free?

Mr. Sunset costs $0.99, with no in-app purchases.

### Which has better reviews, AtomicClock or Mr. Sunset?

Mr. Sunset is rated higher. AtomicClock averages 4.8 out of 5 from 5.5K ratings, while Mr. Sunset averages 5.0 from 1 ratings.

### Do AtomicClock or Mr. Sunset have ads?

AtomicClock shows ads; Mr. Sunset does not.

### Which is updated more often, AtomicClock or Mr. Sunset?

AtomicClock ships an update every 3 weeks, and Mr. Sunset every 21 months. Most recently, AtomicClock was updated on October 14, 2026 and Mr. Sunset on July 5, 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.*