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 provides a clear and attractive LED digital clock display. It's ideal for use on a nightstand or desk, offering customizable options for time format and visibility of weekdays and dates.

Highlights
  • Beautiful LED digital display
  • 12/24 hour mode switching
  • Show/hide weekdays
  • Show/hide date
Features
Read full description

Digital Clock turns your iPhone, iPad, and Mac into a crisp retro LED display — the glow of a classic bedside or desk clock, right on your screen. Prop it up on your nightstand, desk, or home-office shelf and read the time at a glance, day or night. WHAT YOU CAN DO • Choose from several LED and LCD display styles • Show the time in 12- or 24-hour format, with optional seconds, weekday, and date • Add a blinking colon for that authentic digital-clock feel • Keep it in portrait or landscape, or lock it to the orientation you prefer • Dim the screen with a swipe for a gentle, glare-free glow at night • The display stays awake, so the clock is always there when you glance over TIMER & ALARMS • Set alarms to wake up or stay on schedule • Countdown timer, stopwatch, and a Pomodoro mode with work and break intervals • Pick your own alarm sound WIDGETS • Add Digital Clock to your Home Screen and Lock Screen DIGITAL CLOCK PRO Make it truly yours with a one-time upgrade: • Set custom digit and background colors • Use your own photo as the background • See the track currently playing in the Music app • Display any time zone in the world However you like to keep time — a stylish desk clock, a calm bedside companion, or a focus timer for work — Digital Clock has you covered.

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 Clock3 screens
Millisecond Clock4 screens

Verdict

The call

The clearest difference is ads: Digital Clock at none against Millisecond Clock's shown. Digital Clock also leads on update cadence (every 3 weeks vs every 6 months) and ratings volume (1.3K vs 131). Millisecond Clock's advantage is review sentiment (73% vs 51%) and rating (4.7 vs 4.4). On price, in-app purchases, monetization model 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. Digital Clock sells 1 one-off in-app purchase 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

Millisecond Clock holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Digital Clock has 1.3K ratings behind it against 131, so its average is the more settled of the two. Written reviews point the same way: 51% of Digital Clock's written reviews are positive against 73% of Millisecond Clock's.

UpkeepUpdate frequency

Digital Clock ships an update every 3 weeks, Millisecond Clock every 6 months. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

Scorecard6 real differences · 4 level
Digital Clock versus Millisecond Clock: the parameters behind the verdict, then further details
ParameterDigital ClockMillisecond Clock
PriceFreeFree
Rating4.4 (1.3K ratings)4.7 (131 ratings) — better
Positive reviews51.1% of reviews72.7% of reviews — better
Number of ratings1.3K — better131
Update frequencyEvery 3 weeks — betterEvery 6 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS1715.0 — better
Further details — not scored
Size12 MB4 MB
Age rating4+4+
DeveloperApplorium LtdChia-Chun Hsieh

Customer experience

Digital Clock

All ratings1,293 ratings
Positive83.9%
Neutral5.7%
Negative10.4%
Written reviews45 reviews
Positive51.1%
Neutral6.7%
Negative42.2%

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

3 issues
  • Time display issues
  • Widget only shows military time
  • Inconsistent behavior with background images

Requested features

5 requests
  • Add alarm functionality
  • Improve widget customization options
  • Allow changing time format (12-hour vs. 24-hour)
  • Introduce more free customization options
  • Add weather information display

Millisecond Clock

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Digital Clock

One-time1
  • Unlock all features$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 4.4 out of 5 from 1.3K ratings, while Millisecond Clock averages 4.7 from 131 ratings.
Do Digital Clock or Millisecond Clock have ads?
Millisecond Clock shows ads; Digital Clock does not.
Which is updated more often, Digital Clock or Millisecond Clock?
Digital Clock ships an update every 3 weeks, and Millisecond Clock every 6 months. Most recently, Digital Clock was updated on October 13, 2026 and Millisecond Clock on October 1, 2026.

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