Comparison

Watch Tuner vs AtomicClock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Watch Tuner

This application tests mechanical and automatic watches by measuring rate, beat error, and amplitude using your device's microphone. It provides a history of results for tracking watch quality and stability. For best accuracy, use in a quiet environment.

Highlights
  • Measures rate, beat error, and amplitude
  • Uses device microphone for recording ticks
  • Provides results history
  • Supports iPhone and iPod
  • Quiet environment recommended for accuracy
Features
Read full description

Watch Tuner is a mechanical and automatic watch testing application designed to measure following parameters: - rate - beat error - amplitude - beats per hour The application uses the build-in or headset microphone to record audible ticks of the watch. You can measure now with your iPhone the quality and stability of the rate accuracy, amplitude and beat error of mechanical watch movements. You can also take advantage of results history. Use in a quiet environment. Any ambient noises can affect result accuracy. Complete silence is the best. Recommended way to record the ticks is to touch the crown of the watch with the headset microphone. You will get the best results using original Apple EarPods. If you don't need such advanced tool as Watch Tuner and all you need is to the check rate accuracy, maybe it's worth to try Watch Tuner Lite - a little brother of Watch Tuner application. If you need frequency diagram look at Watch Tuner Timegrapher - the most sophisticated app of Watch Tuner series.

About

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.

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
Read 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.

Screenshots

Watch Tuner1 screens
AtomicClock4 screens

Verdict

The call

The clearest difference is price: AtomicClock at Free against Watch Tuner's $3.99. AtomicClock also leads on rating (4.8 vs 3.8) and ratings volume (5.5K vs 6). Watch Tuner's advantage is in-app purchases (none vs 1) and ads (none vs shown). On 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

CostPrice · In-app purchases · Ads · Monetization

AtomicClock is free to download; Watch Tuner costs $3.99 up front. AtomicClock sells 1 one-off in-app purchase. Watch Tuner asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

AtomicClock holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: AtomicClock has 5.5K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 70% of Watch Tuner's written reviews are positive against 84% of AtomicClock's.

UpkeepUpdate frequency

Watch Tuner ships an update every 2 months, AtomicClock every 3 weeks. The most recent releases landed on October 12, 2026 and October 17, 2026 respectively.

Scorecard8 real differences · 2 level
Watch Tuner versus AtomicClock: the parameters behind the verdict, then further details
ParameterWatch TunerAtomicClock
Price$3.99Free — better
Rating3.8 (6 ratings)4.8 (5.5K ratings) — better
Positive reviews69.6% of reviews84.2% of reviews — better
Number of ratings65.5K — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.0 — better
Further details — not scored
Size1 MB17 MB
Age rating4+4+
DeveloperBartlomiej SwiatekTimo Partl

Customer experience

Watch Tuner

All ratings6 ratings
Positive50.0%
Neutral33.3%
Negative16.7%
Written reviews23 reviews
Positive69.6%
Neutral8.7%
Negative21.7%

AtomicClock

All ratings5,539 ratings
Positive96.5%
Neutral1.8%
Negative1.8%
Written reviews241 reviews
Positive84.2%
Neutral3.3%
Negative12.4%

Bugs and requests

Watch Tuner

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

Watch Tuner

No in-app purchases

1 purchases

AtomicClock

One-time1
  • Lifetime Pro Version$6.99

Questions

Is Watch Tuner free?
Watch Tuner costs $3.99, with no in-app purchases.
Is AtomicClock free?
AtomicClock is free to download, with in-app purchases available.
Which has better reviews, Watch Tuner or AtomicClock?
AtomicClock is rated higher. Watch Tuner averages 3.8 out of 5 from 6 ratings, while AtomicClock averages 4.8 from 5.5K ratings.
Do Watch Tuner or AtomicClock have ads?
AtomicClock shows ads; Watch Tuner does not.
Which is updated more often, Watch Tuner or AtomicClock?
Watch Tuner ships an update every 2 months, and AtomicClock every 3 weeks. Most recently, Watch Tuner was updated on October 12, 2026 and AtomicClock on October 17, 2026.

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