# Clock Wave vs AtomicClock

The clearest difference is price: AtomicClock at Free against Clock Wave's $1.99. AtomicClock also leads on update cadence (every 3 weeks vs every 2 months) and ratings volume (5.5K vs 248). Clock Wave's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, review sentiment and device support there is nothing between them.

AtomicClock is free to download; Clock Wave costs $1.99 up front. AtomicClock sells 1 one-off in-app purchase. Clock Wave asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Clock Wave against 4.8 for AtomicClock. That said, the two scores are not equally well evidenced: AtomicClock has 5.5K ratings behind it against 248, so its average is the more settled of the two. Written reviews are what separate them: 92% of Clock Wave's written reviews are positive against 85% of AtomicClock's.

Clock Wave ships an update every 2 months, AtomicClock every 3 weeks. Both last shipped on September 29, 2026.

## The numbers

| Metric | Clock Wave | AtomicClock |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.7 (248 ratings)](https://appshunter.io/ios/app/clock-wave/id1073576068/reviews) | **[4.8 (5.5K ratings)](https://appshunter.io/ios/app/atomicclock-ntp-time/id1402993049/reviews)** |
| Number of ratings | 248 | **5.5K** |
| Positive reviews | **91.6% of reviews** | 84.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#56** | — |
| Size | 2 MB | 17 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [震 任](https://appshunter.io/developer/1073576067) | [Timo Partl](https://appshunter.io/developer/1387413672) |

## What reviewers say

### Clock Wave

[App page](https://appshunter.io/ios/app/clock-wave/id1073576068)

**Currently charting:** #56 Top Paid · Utilities (US App Store)

Calibrate your radio-controlled watch or clock using your iPhone or iPad. Simply tap 'Transmit' and place your device near your watch to automatically sync the accurate time.

**Highlights:** Calibrate radio-controlled watches/clocks, Transmit accurate time automatically, Supports 5 major global time signal stations, Manual station selection for compatibility, Automatic time signal transmission

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Works as advertised
- 👍 Easy to use
- 🚀 Syncs watches quickly
- 💡 Clever solution for remote areas
- 👍 Reliable and consistent

**What reviewers complain about**

- 🐛 Doesn't work for some watches
- 🐛 Inconsistent performance
- 🐛 Occasional crashes or failures

**Reported bugs**

- Incompatibility with certain iOS versions
- Incorrect time zone adjustments

**Requested features**

- Ability to transmit signal automatically
- Support for more watch brands/models
- Improved volume/signal strength control


### 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


## Frequently asked questions

### Is Clock Wave free?

Clock Wave costs $1.99, with no in-app purchases.

### Is AtomicClock free?

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

### Which has better reviews, Clock Wave or AtomicClock?

AtomicClock is rated higher. Clock Wave averages 4.7 out of 5 from 248 ratings, while AtomicClock averages 4.8 from 5.5K ratings.

### Do Clock Wave or AtomicClock have ads?

AtomicClock shows ads; Clock Wave does not.

### Which is updated more often, Clock Wave or AtomicClock?

Clock Wave ships an update every 2 months, and AtomicClock every 3 weeks. Most recently, Clock Wave was updated on September 29, 2026 and AtomicClock on September 29, 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.*