Comparison

Millisecond Clock vs Flip Clock

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

Head to head
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.

About

Flip Clock

This app offers a minimalist desktop clock with customizable colors, fonts, and display options. It includes ambient white noise and can show the date, battery level, and punctuality reminders. It also features an automation for charging display.

Highlights
  • Minimalist desktop clock design
  • Over 40 white noise options
  • Customizable colors and transparency
  • 30 font styles
  • Optional date, battery, and reminder display
  • Automatic charging display automation
Features
Read full description

Flip Clock - Committed to designing a more concise desktop clock, including more than 40 kinds of white noise to choose at will. No mess, no complicated interactions~ The simpler the design, the more focused on life and on things~ The effect of turning pages is natural and comfortable. By default, the hours, minutes and seconds are displayed. If you want to be quiet, you can also set only the hours and minutes to be displayed. If you want to add a color to your life, you can enter the settings interface to customize any color, and the color value with transparency is also OK~ If necessary, you can freely choose to display the date, display the clock background, punctuality reminder, show battery level and other simple functions With 30 new font styles, there's always one for you.(Parts of font styles designed by Freepik) Hey, the App supports iOS 9+, so that old devices are no longer idle~ 【Interesting Gameplay】Automatically display page turning clock steps when charging: Open shortcut command App -> Click Automation -> Add new automation -> Create personal automation -> Select Charger -> Select Connected and click Next -> Select Operation Suggestion open App, Select the page turning clock -> Click Next and click Finish -> Finally, the page turning clock will be displayed automatically whenever the power adapter is plugged in to charge. 【Friendly Reminder】 Black color value: 000000 White color value: FFFFFF What are you waiting for? Let's create a simple life together~

Screenshots

Millisecond Clock4 screens
Flip Clock4 screens

Verdict

The call

The clearest difference is ads: Flip Clock at none against Millisecond Clock's shown. Flip Clock also leads on review sentiment (93% vs 73%) and update cadence (every 2 months vs every 6 months). Millisecond Clock's advantage is rating (4.7 vs 4.5). On price, ratings volume, in-app purchases and monetization model 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. Millisecond Clock sells 3 one-off in-app purchases and Flip Clock sells 1 one-off in-app purchase. 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 4.5. Both are backed by a comparable volume of ratings — 131 and 56 respectively. Written reviews complicate that: 73% of Millisecond Clock's written reviews are positive against 93% of Flip Clock's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Millisecond Clock ships an update every 6 months, Flip Clock every 2 months. The most recent releases landed on September 6, 2026 and September 28, 2026 respectively.

Scorecard5 real differences · 5 level
Millisecond Clock versus Flip Clock: the parameters behind the verdict, then further details
ParameterMillisecond ClockFlip Clock
PriceFreeFree
Rating4.7 (131 ratings) — better4.5 (56 ratings)
Positive reviews72.7% of reviews92.8% of reviews — better
Number of ratings131 — better56
Update frequencyEvery 6 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.09.0 — better
Further details — not scored
Size4 MB39 MB
Age rating4+4+
DeveloperChia-Chun Hsieh倩喜 阮

Customer experience

Millisecond Clock

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

Flip Clock

All ratings56 ratings
Positive91.1%
Neutral3.6%
Negative5.4%
Written reviews69 reviews
Positive92.8%
Neutral2.9%
Negative4.3%

In-app purchases

3 purchases

Millisecond Clock

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

Flip Clock

One-time1
  • VIP$1.99

Questions

Is Millisecond Clock free?
Millisecond Clock is free to download, with in-app purchases available.
Is Flip Clock free?
Flip Clock is free to download, with in-app purchases available.
Which has better reviews, Millisecond Clock or Flip Clock?
Millisecond Clock is rated higher. Millisecond Clock averages 4.7 out of 5 from 131 ratings, while Flip Clock averages 4.5 from 56 ratings.
Do Millisecond Clock or Flip Clock have ads?
Millisecond Clock shows ads; Flip Clock does not.
Which is updated more often, Millisecond Clock or Flip Clock?
Millisecond Clock ships an update every 6 months, and Flip Clock every 2 months. Most recently, Millisecond Clock was updated on September 6, 2026 and Flip Clock on September 28, 2026.

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