Comparison

Digital Clock vs Millisecond Clock

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

Head to head
About

Digital Clock

This app transforms your device into a stylish LED bedside clock with customizable skins and dynamic time displays. It offers alarm functionality, voice time broadcasts, and a countdown timer, perfect for your desk or nightstand.

Highlights
  • Display time in seconds
  • Customizable clock skins
  • Alarm with music selection
  • Hourly voice broadcast
  • Countdown timer
  • Home and lock screen widgets
Features
Read full description

Transform your desk with a minimalist LED digital clock, standby display, and focus timer — designed for Dynamic Island, Lock Screen, and Home Screen widgets. - Live Second Precision: Real-time clock display with seconds across Dynamic Island, Standby Screen, Lock Screen, and Home Screen widgets. - Custom Clock Skins: Eye-catching LED digital clock designs, themes, and customizable bedside displays. - Flexible Display: Toggle between 12-hour/24-hour time formats and easily hide week and date displays. - Smart Alarms & Chimes: Custom alarm sounds, music library, and hourly voice time broadcasts. - Pomodoro Focus Timer: Stay focused on work and study with customizable break intervals. - Stopwatch & Countdown Timer: High-precision timer for workouts, cooking, productivity, and study. - Target Date & Event Countdown: Track important milestones, project deadlines, holidays, and event countdowns.

About

Millisecond Clock

This app displays the most accurate time available, down to the millisecond. It's useful for measuring network delays or video streaming lag by comparing displayed time differences.

Highlights
  • Millisecond precision time display
  • Accurate timekeeping for iPhone and iPad
  • Network delay measurement
  • Video streaming lag analysis
  • Free to download
Features
Read full description

Millisecond Clock shows the exact time down to 1/1000 of a second, accurate enough to measure real delay in cameras, video streams, and network connections. Point a camera at the screen and compare it to another display: the difference in milliseconds tells you exactly how much latency you are dealing with. Beyond precision, Millisecond Clock is a clock you can make your own. Every part of it, from color and font to position on screen, is yours to design. DESIGN YOUR CLOCK- 13 built-in color themes, or create unlimited custom themes with the full color picker - 30 fonts, from the classic digital LED look to elegant serif and rounded styles - Adjustable glow and shadow effects for extra depth - Drag the clock, date, and weekday anywhere on screen, and resize each one independently STAY ON TIME, YOUR WAY- 12-hour or 24-hour time, with an optional blinking colon - 9 date formats to match how you write dates - Show or hide the date and day of the week - Toggle the millisecond display on or off BUILT TO STAY ON SCREEN- Keeps your screen awake so the clock is always visible - A true universal app, designed for both iPhone and iPad Millisecond Clock is free to use, supported by ads. A one-time in-app purchase removes ads and unlocks every premium theme, no subscription required.

Screenshots

Digital Clock4 screens
Millisecond Clock4 screens

Verdict

The call

The clearest difference is update cadence: Digital Clock at fortnightly against Millisecond Clock's every 6 months. Digital Clock also leads on ratings volume (69K vs 131). Millisecond Clock's advantage is review sentiment (73% vs 63%). On price, rating, ads and in-app purchases 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. Digital Clock sells 3 one-off in-app purchases and Millisecond Clock sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Digital Clock against 4.7 for Millisecond Clock. That said, the two scores are not equally well evidenced: Digital Clock has 69K ratings behind it against 131, so its average is the more settled of the two. Written reviews are what separate them: 63% of Digital Clock's written reviews are positive against 73% of Millisecond Clock's.

UpkeepUpdate frequency

Digital Clock ships an update fortnightly, Millisecond Clock every 6 months. The most recent releases landed on September 25, 2026 and September 6, 2026 respectively.

Scorecard3 real differences · 7 level
Digital Clock versus Millisecond Clock: the parameters behind the verdict, then further details
ParameterDigital ClockMillisecond Clock
PriceFreeFree
Rating4.6 (69K ratings)4.7 (131 ratings) — better
Positive reviews63.0% of reviews72.7% of reviews — better
Number of ratings69K — better131
Update frequencyFortnightly — betterEvery 6 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size80 MB4 MB
Age rating4+4+
Developer俊杰 阮Chia-Chun Hsieh

Customer experience

Digital Clock

All ratings68,793 ratings
Positive90.2%
Neutral4.1%
Negative5.6%
Written reviews621 reviews
Positive63.0%
Neutral8.7%
Negative28.3%

Millisecond Clock

All ratings131 ratings
Positive93.1%
Neutral2.3%
Negative4.6%
Written reviews11 reviews
Positive72.7%
Neutral18.2%
Negative9.1%

Bugs and requests

Digital Clock

Reported bugs

6 issues
  • Alarm doesn't sound if device is in silent mode
  • Alarm doesn't work
  • Time display is wrong
  • Widget doesn't show correct time
  • App crashes frequently
Show 1 more
  • Incompatible with older devices

Requested features

9 requests
  • Dark mode option
  • More skins please ie: pixie (tube); RGB sliders
  • Ability to input own music for alarm
  • Vertical display
  • Battery percentage and reminder
Show 4 more
  • Ability to change alarm sounds
  • Portrait mode
  • Bigger clock display
  • Transparent widget

Millisecond Clock

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Digital Clock

One-time3
  • All clock styles$0.99
  • Remove Ads$0.99
  • Pro Version$2.99
3 purchases

Millisecond Clock

One-time3
  • Remove Ads$0.99
  • Special Offer Package$2.99
  • Unlock Themes$3.99

Questions

Is Digital Clock free?
Digital Clock is free to download, with in-app purchases available.
Is Millisecond Clock free?
Millisecond Clock is free to download, with in-app purchases available.
Which has better reviews, Digital Clock or Millisecond Clock?
Millisecond Clock is rated higher. Digital Clock averages 4.6 out of 5 from 69K ratings, while Millisecond Clock averages 4.7 from 131 ratings.
Do Digital Clock or Millisecond Clock have ads?
Both Digital Clock and Millisecond Clock show ads.
Which is updated more often, Digital Clock or Millisecond Clock?
Digital Clock ships an update fortnightly, and Millisecond Clock every 6 months. Most recently, Digital Clock was updated on September 25, 2026 and Millisecond Clock on September 6, 2026.

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