AtomicClock vs Longines VHP GMT Flash Setting
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.
Longines VHP GMT Flash Setting
This app allows users to set their Longines VHP GMT Flash Setting watch using light. It offers a second time zone and is designed for travelers.
- Flash Setting technology
- Second time zone
- Quartz movement features
- Sporty and elegant design
- Ideal for travelers
Read full descriptionHide full description
The Conquest V.H.P. represents a new achievement in the field of quartz, combining great precision, high technicality and a sporty look, marked by the brand’s unique elegance. Longines now offers new variations that bring together all the qualities of the Conquest V.H.P. movement, further enriched by a second time zone as well as an innovative system called “Flash Setting” that sets the watch using light. These features make the Conquest V.H.P. GMT Flash Setting an ideal accoutrement on the wrist of any keen traveller, who will appreciate this loyal companion on their journeys far and wide across the globe. Please find here more informations : https://www.longines.com/watches/flashsetting/infos
Screenshots
Verdict
The clearest difference is review sentiment: AtomicClock at 84% against Longines VHP GMT Flash Setting's 33%. AtomicClock also leads on rating (4.8 vs 3.0) and ratings volume (5.5K vs 7). Longines VHP GMT Flash Setting's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support 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. Longines VHP GMT Flash Setting asks for nothing beyond the download.
AtomicClock holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: AtomicClock has 5.5K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 84% of AtomicClock's written reviews are positive against 33% of Longines VHP GMT Flash Setting's.
AtomicClock ships an update every 3 weeks, Longines VHP GMT Flash Setting every 2 months. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.
| Parameter | AtomicClock | Longines VHP GMT Flash Setting |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5.5K ratings) — better | 3.0 (7 ratings) |
| Positive reviews | 84.2% of reviews — better | 33.3% of reviews |
| Number of ratings | 5.5K — better | 7 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 9.3 — better |
| Further details — not scored | ||
| Size | 17 MB | 83 MB |
| Age rating | 4+ | 4+ |
| Developer | Timo Partl | Compagnie des Montres Longines Francillon SA |
Customer experience
AtomicClock
Longines VHP GMT Flash Setting
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
Longines VHP GMT Flash Setting
Not enough reviews yet to summarise bugs or requests.
In-app purchases
AtomicClock
- Lifetime Pro Version$6.99
Longines VHP GMT Flash Setting
No in-app purchases
Questions
Is AtomicClock free?
Is Longines VHP GMT Flash Setting free?
Which has better reviews, AtomicClock or Longines VHP GMT Flash Setting?
Do AtomicClock or Longines VHP GMT Flash Setting have ads?
Which is updated more often, AtomicClock or Longines VHP GMT Flash Setting?
Other comparisons















