Millisecond Clock vs Flip Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Millisecond precision time display
- Accurate timekeeping for iPhone and iPad
- Network delay measurement
- Video streaming lag analysis
- Free to download
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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.
Flip Clock
Transform your device into a stylish digital or analog clock. Offers extensive customization with various styles, fonts, skins, and backgrounds. Choose between light and dark modes, 12 or 24-hour formats, and enable or disable flip animations and background sounds.
- Full-screen time and date display
- Landscape and portrait modes
- 12/24 hour format toggle
- Dark/light mode switch
- Flip clock and analog clock options
- Customizable styles, fonts, and skins
- Background sound on/off
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Make time a calmer part of your day. Flip Clock turns your iPhone, iPad or Mac into a beautifully clear digital clock, with realistic flip animations, practical timers and soothing ambient sounds. Keep it beside your bed, set it on your desk or use it to give your next study session a clear beginning and end. A classic mechanical look meets the everyday tools you need, with no in-app paywall or subscription required to unlock features. A CLASSIC FLIP CLOCK, REFINED Watch the hours, minutes and seconds turn with carefully crafted mechanical motion. Large, easy-to-read numbers keep the time in focus. Choose a 12-hour or 24-hour display, show or hide seconds and the date, and hide the controls for a clean clock view. MAKE IT YOURS Match your space with Classic, Paper and Night appearances. Choose Rounded, Standard, Mono or Serif numerals for a softer, modern, technical or vintage look. Your preferred style carries across the clock, countdown and stopwatch. A QUIETER BEDSIDE DISPLAY Switch on the night preset for a dimmer clock and quieter presentation. Adjust the clock's dimming, automatically hide controls and choose whether to keep the display awake. On iPhone and iPad, use portrait or landscape. On Mac, make the clock part of your desktop setup. COUNT DOWN OR COUNT UP Set a countdown for focused work, reading or a well-earned break. Save frequently used durations as presets, or use the stopwatch to see how long a task takes. Both modes use the same distinctive flip display. Switching modes resets the previous timer so you can begin a new task with a clean start. FIND YOUR BACKGROUND SOUND Choose white, pink or brown noise, or settle into rain, ocean waves, a forest brook, gentle wind, birds, crickets or a campfire. Adjust the volume and set an automatic stop time for your listening session. Built-in sounds loop, so your session is not limited by the length of an audio track. SLEEP AND FOCUS, READY TO START Apply a Sleep or Focus scene to bring your preferred appearance, sound and timer settings together. Customize the presets to fit your evening routine or next work session. TIME AT A GLANCE On iPhone and iPad, add widgets to supported Home and Lock Screens. On Mac, add clock widgets to your desktop. Live Activities show an active countdown or stopwatch on supported iPhone and iPad systems. Use Shortcuts to start a scene or countdown, or stop ambient sound. Widget placement and Live Activities depend on your device and system version. DESIGNED TO FEEL COMFORTABLE VoiceOver support, Reduce Motion support and increased-contrast styling help make the clock easier to use. A focused interface keeps everyday controls close without crowding the time. Enjoy a familiar clock experience across iOS, iPadOS and macOS. Choose your look. Set your pace. Make a little room for calm with Flip Clock. Support Email: support@flipclocker.com Website: https://flipclocker.com Terms: https://flipclocker.com/terms Privacy Policy: https://flipclocker.com/privacy
Screenshots
Verdict
The clearest difference is ads: Flip Clock at none against Millisecond Clock's shown. Flip Clock also leads on update cadence (every 2 weeks vs every 6 months) and review sentiment (100% vs 73%). Millisecond Clock's advantage is ratings volume (131 vs 28) and iOS requirement (15.0 vs 17.0). 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
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.
Flip Clock holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 131 and 28 respectively. Written reviews point the same way: 73% of Millisecond Clock's written reviews are positive against 100% of Flip Clock's.
Millisecond Clock ships an update every 6 months, Flip Clock every 2 weeks. The most recent releases landed on October 1, 2026 and October 14, 2026 respectively.
| Parameter | Millisecond Clock | Flip Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (131 ratings) | 5.0 (28 ratings) — better |
| Positive reviews | 72.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 131 — better | 28 |
| Update frequency | Every 6 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Chia-Chun Hsieh | 通 张 |
Customer experience
Millisecond Clock
Flip Clock
Bugs and requests
Millisecond Clock
Not enough reviews yet to summarise bugs or requests.
Flip Clock
Reported bugs
1 issue- Cannot set lock screen
Requested features
29 requests- Change background colors
- Add white noise options
- Task scheduling feature
- Resizing to fit phone screen
- Landscape and portrait modes
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- Timed reminders with soothing music
- Multiple looks/themes
- Countdown feature
- More white noise options
- Rotation options (landscape and portrait)
- Automatic flipping
- Customizable font size
- Change thickness of clock hands
- Shrink the widget
- Weather temperature as a plugin
- More beautiful backgrounds
- Add sound of the flip book
- More customization options
- Make each hand a different color
- Set alarm clock
- Full screen for bedside clock
- Larger numbers for low vision/night use
- Increase white noise options
- Color of clock border to be transparent
- More background sounds (rain, thunder, nature)
- Change day and date colors
- Open app of choice on click
- Lock screen functionality
- Brightness adjustment for numbers/letters
In-app purchases
Millisecond Clock
- Remove Ads$0.99
- Special Offer Package$2.99
- Unlock Themes$3.99
Flip Clock
- Lifetime$7.99
Questions
Is Millisecond Clock free?
Is Flip Clock free?
Which has better reviews, Millisecond Clock or Flip Clock?
Do Millisecond Clock or Flip Clock have ads?
Which is updated more often, Millisecond Clock or Flip Clock?
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