# AtomicClock vs TimeWave

The clearest difference is review sentiment: AtomicClock at 85% against TimeWave's 0%. AtomicClock also leads on rating (4.8 vs 4.4) and ratings volume (5.5K vs 18). TimeWave's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. AtomicClock sells 1 one-off in-app purchase and TimeWave sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

AtomicClock holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: AtomicClock has 5.5K ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 85% of AtomicClock's written reviews are positive against 0% of TimeWave's.

AtomicClock ships an update every 3 weeks, TimeWave weekly. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | AtomicClock | TimeWave |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5.5K ratings)](https://appshunter.io/ios/app/atomicclock-ntp-time/id1402993049/reviews)** | [4.4 (18 ratings)](https://appshunter.io/ios/app/timewave-atomic-watch-sync/id6779167516/reviews) |
| Number of ratings | **5.5K** | 18 |
| Positive reviews | **84.5% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 17 MB | 3 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Timo Partl](https://appshunter.io/developer/1387413672) | [毅 何](https://appshunter.io/developer/1477138542) |

## 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


### TimeWave

[App page](https://appshunter.io/ios/app/timewave-atomic-watch-sync/id6779167516)

This app simulates radio-controlled clock signals to help your watch synchronize its time when terrestrial signals are unavailable. It offers guides for popular watch brands and checks environmental conditions before transmission.

**Highlights:** Radio-controlled clock signal simulation, Support for multiple international time signals, Environment pre-check and recommendations, Smart output tuning for various audio paths, Local time mode for overseas watches, Watch-specific synchronization guides, Live signal visualization and sync history

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Me a Coffee | $0.99 | one-time |
| Lifetime Membership | $3.99 | one-time |


## Frequently asked questions

### Is AtomicClock free?

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

### Is TimeWave free?

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

### Which has better reviews, AtomicClock or TimeWave?

AtomicClock is rated higher. AtomicClock averages 4.8 out of 5 from 5.5K ratings, while TimeWave averages 4.4 from 18 ratings.

### Do AtomicClock or TimeWave have ads?

AtomicClock shows ads; TimeWave does not.

### Which is updated more often, AtomicClock or TimeWave?

AtomicClock ships an update every 3 weeks, and TimeWave weekly. Most recently, AtomicClock was updated on September 24, 2026 and TimeWave on September 21, 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.*