Comparison

Time Calibrator vs StandBy Clock

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

Head to head
About

Time Calibrator

This utility app provides precise local time and date information by connecting to an atomic clock server in Switzerland. It utilizes quantum technology to transmit this data at the speed of light directly to compatible i-Atomic watches.

Highlights
  • Accurate global time and date
  • Connects to Swiss atomic clock server
  • Quantum technology data transmission
  • Direct communication to i-Atomic watches
  • Light signal synchronization
Features
Read full description

This app is designed for i-Atomic watches users Welcome to Time Calibrator! Time Calibrator has been specifically designed to deliver accurate time information to people all around the globe. The app connects automatically to the atomic clock server in Switzerland to display the exact local time and date. Through quantum technology, the information travels at the speed of light from the NTP server and is communicated directly to AtomTime i-Atomic watches via light signals.

About

StandBy Clock

Transform your iPhone into a personalized bedside display with over 100 customizable widgets. Show time, calendar, battery, photos, and more. Simple to use, just choose, customize, and add to your StandBy screen.

Highlights
  • 100+ customizable widgets
  • Analog and digital clock options
  • Calendar and dual time zone display
  • Countdown timers for events
  • Photo and GIF widgets
  • Customizable theme colors and styles
Features
Read full description

StandBy Clock — Make Your iPhone StandBy Screen Your Own Turn your charging iPhone into a bedside display that feels personal. Explore 240+ widget styles, including 125+ Premium designs, with flip clocks, GIF animations, photos, countdowns, calendars, battery displays and multi-time-zone layouts. Start with free designs, then unlock everything with weekly, annual or lifetime options. CLOCK WIDGETS • Analog Clock — Classic and modern faces with distinctive hands, markers and layouts. • Digital Clock — Bold, easy-to-read time displays made for desks and nightstands. • Calendar — See the date and day at a glance in a range of visual styles. • Single Time Zone — Focus on one city with rich, expressive layouts. • Dual Time Zone — Keep two cities visible for travel, remote work or someone far away. • Triple Time Zone — Follow three cities at once with flip boards, dashboards, neon styles and more. MORE THAN A CLOCK • Countdown — Count down to birthdays, anniversaries, trips and important moments. • Info Card — Put your own message or useful information on the StandBy screen. • Battery — Check the current charge level at a glance. • Photo Widget — Turn a favorite image into part of your bedside display. • GIF Widget — Add motion and personality with animated GIF designs. MAKE IT YOURS Customize colors, fonts, time formats, cities, labels, messages and photos. Save multiple named widgets for different moods and situations, then choose the design you want from the iOS widget picker. BUILT FOR iOS STANDBY StandBy Clock is designed for the landscape charging experience introduced in iOS 17. Place your iPhone on its side while charging to enter StandBy. Always-On Display is supported on compatible Pro iPhone models. HOW TO GET STARTED 1. Choose a free or Premium design. 2. Customize it and save it with a name. 3. Add StandBy Clock from the widget picker. 4. Select your saved design and enjoy your new StandBy screen. FREE AND PREMIUM A selection of designs is free to use. Premium unlocks 125+ additional designs and the complete customization library. Choose the option that suits you: weekly, annual or lifetime access. Available products and local prices are shown in the app before purchase. Download StandBy Clock and make every charging moment look like yours. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Time Calibrator3 screens
StandBy Clock4 screens

Verdict

The call

The clearest difference is review sentiment: StandBy Clock at 100% against Time Calibrator's 33%. StandBy Clock also leads on rating (4.0 vs 2.7) and update cadence (every 6 days vs every 8 months). Time Calibrator's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, ratings volume 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. StandBy Clock sells 3 in-app purchases, starting at $1.99 per 7 days. Time Calibrator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

StandBy Clock holds the better App Store score, 4.0 against 2.7. Both are backed by a comparable volume of ratings — 3 and 6 respectively. Written reviews point the same way: 33% of Time Calibrator's written reviews are positive against 100% of StandBy Clock's.

UpkeepUpdate frequency

Time Calibrator ships an update every 8 months, StandBy Clock every 6 days. The most recent releases landed on September 21, 2026 and October 19, 2026 respectively.

Scorecard7 real differences · 3 level
Time Calibrator versus StandBy Clock: the parameters behind the verdict, then further details
ParameterTime CalibratorStandBy Clock
PriceFreeFree
Rating2.7 (3 ratings)4.0 (6 ratings) — better
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings36 — better
Update frequencyEvery 8 monthsEvery 6 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size8 MB23 MB
Age rating4+4+
DeveloperAtomtime Suisse S.A.逸文 周

Customer experience

Time Calibrator

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

StandBy Clock

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Time Calibrator

No in-app purchases

3 purchases

StandBy Clock

Subscriptions2
  • Weekly Pro$1.997 Days
  • Annual Pro7 Days trial$6.991 Year
One-time1
  • StandBy Clock Lifetime$14.99

Questions

Is Time Calibrator free?
Time Calibrator is free to download, with no in-app purchases.
Is StandBy Clock free?
StandBy Clock is free to download, with in-app purchases available.
Which has better reviews, Time Calibrator or StandBy Clock?
StandBy Clock is rated higher. Time Calibrator averages 2.7 out of 5 from 3 ratings, while StandBy Clock averages 4.0 from 6 ratings.
Do Time Calibrator or StandBy Clock have ads?
StandBy Clock shows ads; Time Calibrator does not.
Which is updated more often, Time Calibrator or StandBy Clock?
Time Calibrator ships an update every 8 months, and StandBy Clock every 6 days. Most recently, Time Calibrator was updated on September 21, 2026 and StandBy Clock on October 19, 2026.

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