Comparison

MR vs AtomicClock

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

Head to head
About

MR

This utility app connects your compatible CASIO watch to your iPhone via Bluetooth. It enables various Mobile Link functions and allows for simplified watch operations through your phone's screen. Data can be transferred to the new CASIO WATCHES app.

Highlights
  • Bluetooth v4.0 connectivity
  • Mobile Link functions
  • Simplified watch operations
  • User data transfer
  • Location services for accurate time
Features
Read full description

Important - Please Read Request to Transfer to the CASIO WATCHES App (Support Termination Notification) The functionality of this app will be transferred to the new watch app, CASIO WATCHES. By updating to version 3.0, users of this app will be able to transfer their user data to CASIO WATCHES via this app. While we understand this may be inconvenient for some users, we ask that you transfer your data across, and continue using CASIO WATCHES in place of this app. ●Description This is the basic application for connecting and communicating with a Bluetooth(R) v4.0 enabled CASIO watch. Pairing your watch with an iPhone enables use of a variety of different Mobile Link functions that greatly enhance the iPhone experience. The MR-G Connected app also simplifies certain watch operations by letting you perform them on your phone screen. Visit the website below for details. http://world.g-shock.com/ We recommend using MR-G Connected on the following operating systems. Operation is not guaranteed for any operating system not listed below. Even if an operating system has been confirmed as compatible, software updates or display specifications may prevent proper display and/or operation. ⋅ iOS 14 or later. Applicable Watches: MRG-G2000, MRG-B1000, MRG-B2000 *Some watches unavailable in your region may be displayed in the application. This application uses location information to obtain accurate time. For "Location Service" in iPhone privacy settings, please "Always". If it is not "Always", the application will not work properly. Continued use of GPS running in the background can dramatically decrease battery life.

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

MR2 screens
AtomicClock4 screens

Verdict

The call

The clearest difference is rating: AtomicClock at 4.8 against MR's 3.5. AtomicClock also leads on review sentiment (85% vs 55%) and ratings volume (5.5K vs 6). MR'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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

AtomicClock holds the better App Store score, 4.8 against 3.5. 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: 55% of MR's written reviews are positive against 85% of AtomicClock's.

UpkeepUpdate frequency

MR ships an update every 3 months, AtomicClock every 3 weeks. The most recent releases landed on September 20, 2026 and September 24, 2026 respectively.

Scorecard8 real differences · 2 level
MR versus AtomicClock: the parameters behind the verdict, then further details
ParameterMRAtomicClock
PriceFreeFree
Rating3.5 (6 ratings)4.8 (5.5K ratings) — better
Positive reviews54.5% of reviews84.5% of reviews — better
Number of ratings65.5K — better
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.0 — better15.0
Further details — not scored
Size127 MB17 MB
Age rating4+4+
DeveloperCASIO COMPUTER CO., LTD.Timo Partl

Customer experience

MR

All ratings6 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews11 reviews
Positive54.5%
Neutral9.1%
Negative36.4%

AtomicClock

All ratings5,539 ratings
Positive96.5%
Neutral1.8%
Negative1.8%
Written reviews239 reviews
Positive84.5%
Neutral3.3%
Negative12.1%

Bugs and requests

MR

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

MR

No in-app purchases

1 purchases

AtomicClock

One-time1
  • Lifetime Pro Version$6.99

Questions

Is MR free?
MR is free to download, with no in-app purchases.
Is AtomicClock free?
AtomicClock is free to download, with in-app purchases available.
Which has better reviews, MR or AtomicClock?
AtomicClock is rated higher. MR averages 3.5 out of 5 from 6 ratings, while AtomicClock averages 4.8 from 5.5K ratings.
Do MR or AtomicClock have ads?
AtomicClock shows ads; MR does not.
Which is updated more often, MR or AtomicClock?
MR ships an update every 3 months, and AtomicClock every 3 weeks. Most recently, MR was updated on September 20, 2026 and AtomicClock on September 24, 2026.

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