Millisecond Clock Downloads & RevenueMillisecond Clock · App Store
Not in any tracked top chart right now.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperChia-Chun Hsieh
CategoryLifestyle
PriceFree
Released
Rating★ 4.7 (131)
Version2.4.0
Age rating4+
First seen by us
20 Oct 2026
20 Oct 2026Full timeline · 3 events
- 🆕Millisecond Clock first spotted by AppInsiderUnited States (found via search)
- 📦Millisecond Clock version 2.4.0- Resizing the time, date, and weekday on the main screen now works correctly, and your adjustments are saved.
- "Reset Settings" no longer removes your purchases. Remove Ads and Unlock Themes stay active after a reset.
- Color picker: the red, green, and blue sliders now respond reliably, and adjusting one channel no longer moves the others. Short hex codes (such as #FFF) are now supported.
- The preview clock in Settings now follows your 12- or 24-hour preference and correctly shows 12 (instead of 00) at noon and midnight.
- Fixed a case where the loading indicator could stay on screen after a purchase or restore didn't finish; purchases and restores are now more reliable.
- General stability improvements and fixes for several rare crashes.… more - 🆕Millisecond Clock released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.7 ★
131 ratings
Measured
Millisecond Clock on the App Store
App details
App ID
1526615560
Publisher
Chia-Chun Hsieh
On the store since
Aug 2020
6 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
4
EN JA ZH ZH
Size
4 MB
Also listed in
Utilities
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.7 ★
131 ratings
Measured
Ratings
131
Measured
About Millisecond Clock
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.
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.
Latest updates
2.4.0
- Resizing the time, date, and weekday on the main screen now works correctly, and your adjustments are saved.
- "Reset Settings" no longer removes your purchases. Remove Ads and Unlock Themes stay active after a reset.
- Color picker: the red, green, and blue sliders now respond reliably, and adjusting one channel no longer moves the others. Short hex codes (such as #FFF) are now supported.
- The preview clock in Settings now follows your 12- or 24-hour preference and correctly shows 12 (instead of 00) at noon and midnight.
- Fixed a case where the loading indicator could stay on screen after a purchase or restore didn't finish; purchases and restores are now more reliable.
- General stability improvements and fixes for several rare crashes.
