AtomicClock vs Epoch Time Converter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AtomicClock
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.
- 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
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Check precise NTP reference time at a glance. AtomicClock helps you set watches, wall clocks, cameras, and other devices, compare local time with UTC, and follow moments when every second matters. Clear analog and digital time AtomicClock displays current time from NTP servers that reference atomic clocks. Choose a predefined server or add your own, then view local or UTC time in a clean analog or digital clock. Customize your reference clock • Switch between 12-hour and 24-hour time • Customize the time format • Choose from multiple clock faces and hands • Use a smooth, fluid second hand • Add acoustic ticking or the Greenwich Time Signal • Tap the screen to hide information and controls, freeze the display, or mute ticking Details for precise time checks View technical NTP information, including round-trip time and server stratum. Whether you are checking a timestamp, preparing a camera, aligning a wall clock, or setting a watch by hand, the seconds remain clear and easy to follow. AtomicClock is free to use. AtomicClock Pro is available as a one-time purchase with no subscription. It unlocks your preferred clock face, hands, and font, removes ads, and includes upcoming Pro features. AtomicClock displays NTP reference time for comparison and does not change your device’s system time. Results can vary with the selected server, network conditions, and device behavior.
Epoch Time Converter
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.
- Epoch time to traditional time conversion
- Traditional time to epoch time conversion
- Live second-by-second epoch time display
- Simple and intuitive interface
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Epoch Time Converter is a simple app that converts epoch time to traditional time and vise versa. You can also utilize this app to view live second by second epoch time.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | AtomicClock | Epoch Time Converter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5.6K ratings) — better | 4.5 (6 ratings) |
| Positive reviews | 84.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 5.6K — better | 6 |
| Update frequency | Monthly — better | Every 15 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.4 — better | 18 |
| Further details — not scored | ||
| Size | 17 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Timo Partl | corey smith |
Customer experience
AtomicClock
Epoch Time Converter
Bugs and requests
AtomicClock
Reported bugs
3 issues- Crashes on certain iOS versions
- Occasional freezing of hands
- Countdown timer sound not working
Requested features
5 requests- 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
Not enough reviews yet to summarise bugs or requests.
In-app purchases
AtomicClock
- Lifetime Pro Version$6.99
Epoch Time Converter
No in-app purchases
Questions
Is AtomicClock free?
Is Epoch Time Converter free?
Which has better reviews, AtomicClock or Epoch Time Converter?
Do AtomicClock or Epoch Time Converter have ads?
Which is updated more often, AtomicClock or Epoch Time Converter?
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