Millisecond Clock vs Alarm 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.
Alarm Clock
This app helps you wake up on time with customizable alarms and sleep soundly with soothing sounds. It also includes timers for various activities like cooking or workouts, and countdowns for special events.
- Customizable alarm playlists
- Background alarm support
- Sleep timer with music/white noise
- Countdown timers for events
- Multifunctional cooking/exercise timer
- Desk clock display
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Set your alarm and sleep comfortably and we will remind you when it's time to go to sleep, at the same time choose your sleeping time and we will notify you every day, never fall asleep despite your alarm again, with our timer section, you can set your meals, exercises, waiting times by counting down from the time you set or using time functions progressively and we will tell you when it's time and you can follow it at the same time. FEATURES: * Create your own awakening playlist with the best music * Background alarm support: the alarm will sound even if the app is not running * Fall asleep to your favorite songs or white noise * Convenient app settings. Easily access all the options you need. Alarm Clock app offers the functionality of 4 indispensable apps in 1 app: ALARM - Wake up to your favorite music - Set multiple alarms with different tunes - Background alarm support: the alarm will sound even if the app is not running! - Add your titles to the alarm! HOURS - 12 or 24 hour format - Show/Hide Seconds - Designed as a desk clock. SLEEP TIMER - Create your own playlist with your favorite songs - Personify your music/sounds. - Fall asleep with white noise COUNTDOWN - Never miss important events and special occasions. Count down for your vacation, anniversary, graduation and more TIMER - Whether you're cooking or exercising, the multifunctional timer will always be close at hand! Beautiful. Reliable. Versatile. Get the alarm clock you've been looking for! To access all the features of the Alarm Clock for Me app, you need to grant access to the following.
Screenshots
Verdict
The clearest difference is review sentiment: Millisecond Clock at 73% against Alarm Clock's 0%. Millisecond Clock also leads on rating (4.7 vs 3.3) and ratings volume (131 vs 6). Alarm Clock's advantage is in-app purchases (none vs 3) and update cadence (every 2 days vs every 6 months). On price, ads, device support and iOS requirement 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. Alarm Clock asks for nothing beyond the download.
Millisecond Clock holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: Millisecond Clock has 131 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 73% of Millisecond Clock's written reviews are positive against 0% of Alarm Clock's.
Millisecond Clock ships an update every 6 months, Alarm Clock every 2 days. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.
| Parameter | Millisecond Clock | Alarm Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (131 ratings) — better | 3.3 (6 ratings) |
| Positive reviews | 72.7% of reviews — better | 0.0% of reviews |
| Number of ratings | 131 — better | 6 |
| Update frequency | Every 6 months | Every 2 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 4 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Chia-Chun Hsieh | Selcuk ASLANTAS |
Customer experience
Millisecond Clock
Alarm Clock
In-app purchases
Millisecond Clock
- Remove Ads$0.99
- Special Offer Package$2.99
- Unlock Themes$3.99
Alarm Clock
No in-app purchases
Questions
Is Millisecond Clock free?
Is Alarm Clock free?
Which has better reviews, Millisecond Clock or Alarm Clock?
Do Millisecond Clock or Alarm Clock have ads?
Which is updated more often, Millisecond Clock or Alarm Clock?
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