AtomicClock vs XVert
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
Read full descriptionHide full description
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.
XVert
Read full descriptionHide full description
XVert – Custom Unit Converter Most unit converters give you the basics. XVert lets you build your own. XVert comes loaded with essential conversions across length, weight, temperature, volume, speed, and more, plus live currency exchange rates, but the real power is in the Formula Builder. Create custom formulas for any conversion that doesn't exist yet: fuel economy in obscure units, cooking ratios, workshop calculations, hobby-specific measurements. If you can express it as a formula, XVert can convert it. Features Live Currency Conversion - Convert between world currencies with up-to-date exchange rates, right alongside your other conversions Custom Formula Builder - Create multi-step conversion formulas for any unit pair imaginable Organized Categories - Group your formulas into color-coded categories, reordered exactly how you like Clean Conversion Interface - A smooth, dual-input design lets you type from either direction and see results instantly Adjustable Precision - Set decimal places to match how much detail you actually need Haptic Feedback - Satisfying, optional tactile response as you interact Built-in Formulas - Common conversions ready to use right out of the box No subscriptions. No ads. - Pay once, own it forever.
Screenshots
Verdict
The clearest difference is price: AtomicClock at Free against XVert's $1.99. AtomicClock also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.6). XVert's advantage is in-app purchases (none vs 1) and ads (none vs shown).
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
AtomicClock is free to download; XVert costs $1.99 up front. AtomicClock sells 1 one-off in-app purchase. XVert asks for nothing beyond the download.
AtomicClock ships an update every 3 weeks, XVert every 3 days. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.
| Parameter | AtomicClock | XVert |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.8 (5.5K ratings) — better | — |
| Positive reviews | 84.2% of reviews | — |
| Number of ratings | 5.5K — better | — |
| Update frequency | Every 3 weeks | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 17 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Timo Partl | Brigg Thorp |
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
XVert
Not enough reviews yet to summarise bugs or requests.
In-app purchases
AtomicClock
- Lifetime Pro Version$6.99
XVert
No in-app purchases









