# AtomicClock vs Epoch Time Converter

The clearest difference is in-app purchases: Epoch Time Converter at none against AtomicClock's 1. Epoch Time Converter also leads on ads (none vs shown) and review sentiment (100% vs 84%). AtomicClock's advantage is update cadence (monthly vs every 15 months) and ratings volume (5.6K vs 6). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AtomicClock sells 1 one-off in-app purchase. Epoch Time Converter asks for nothing beyond the download.

AtomicClock holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: AtomicClock has 5.6K ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 84% of AtomicClock's written reviews are positive against 100% of Epoch Time Converter's, so the app with the better star average is not the one people write more warmly about.

AtomicClock ships an update monthly, Epoch Time Converter every 15 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | AtomicClock | Epoch Time Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5.6K ratings)](https://appshunter.io/ios/app/atomicclock-ntp-time/id1402993049/reviews)** | [4.5 (6 ratings)](https://appshunter.io/ios/app/epoch-time-converter/id1438688119/reviews) |
| Number of ratings | **5.6K** | 6 |
| Positive reviews | 84.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 15 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 17 MB | 4 MB |
| Requires iOS | **17.4** | 18 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Timo Partl](https://appshunter.io/developer/1387413672) | [corey smith](https://appshunter.io/developer/1273550234) |

## 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


### Epoch Time Converter

[App page](https://appshunter.io/ios/app/epoch-time-converter/id1438688119)

Easily convert between epoch time and traditional date/time formats. This utility also provides a live, second-by-second display of the current epoch time. It's a straightforward tool for anyone needing to work with Unix timestamps.

**Highlights:** Epoch time to traditional time conversion, Traditional time to epoch time conversion, Live second-by-second epoch time display, Simple and intuitive interface

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

**In-app purchases:** none


## Frequently asked questions

### Is AtomicClock free?

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

### Is Epoch Time Converter free?

Epoch Time Converter is free to download, with no in-app purchases.

### Which has better reviews, AtomicClock or Epoch Time Converter?

AtomicClock is rated higher. AtomicClock averages 4.8 out of 5 from 5.6K ratings, while Epoch Time Converter averages 4.5 from 6 ratings.

### Do AtomicClock or Epoch Time Converter have ads?

AtomicClock shows ads; Epoch Time Converter does not.

### Which is updated more often, AtomicClock or Epoch Time Converter?

AtomicClock ships an update monthly, and Epoch Time Converter every 15 months. Most recently, AtomicClock was updated on October 26, 2026 and Epoch Time Converter on October 26, 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.*