Best Clock With Seconds Countdown Apps

246+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated September 2026

From beginner-friendly picks to power-user tools, our clock with seconds countdown list covers 246+ iPhone apps updated through September 2026. Compare ratings, prices, and screenshots in one place.

Compare top Clock With Seconds Countdown Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Clock – Simple & CustomizableClock – Simple & CustomizableFree4.4★ (152)NoNoSep 2026
2Flip Clock:Digital Desk WidgetFlip Clock:Digital Desk WidgetFree4.6★ (69K)YesYesSep 2026
3Countdown by timeanddate.comCountdown by timeanddate.comFree2.9★ (125)NoYesSep 2026
4Countdown: Big Timer & ClockCountdown: Big Timer & Clock$1.994.1★ (41)NoNoSep 2026
5Countdown Timer - Clock WidgetCountdown Timer - Clock WidgetFree4.5★ (1.4K)YesYesSep 2026
6Exact SecondsExact SecondsFree5.0★ (1)NoNoJul 2026
7Clock - Alarm ClockClock - Alarm ClockFree4.7★ (3)YesYesSep 2026
8Countdown Timer: Day CounterCountdown Timer: Day CounterFree4.8★ (1.2K)NoNoSep 2026

Top Picks for Clock With Seconds Countdown

Clock – Simple & Customizable#1

Clock – Simple & Customizable by Max-Joseph Krempl

A minimalistic 24h clock app
Editor's Choice
🔧 Utilities
4.4😊(152 ratings)
Free
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This app displays the time with a minimalistic design, utilizing the full screen. It offers extensive customization for time format, including 12/24 hour, leading zeros, and seconds precision. Screen brightness can be adjusted by swiping, and screen dimming can be prevented.

What We Love

  • 👍 Simple, minimalist design focused solely on displaying time
  • 🆓 Completely free with no ads or in-app purchases
  • 🔒 No data collection or tracking
  • 🔆 Adjustable brightness/dimming feature for nighttime use
  • ⏱️ Displays seconds and milliseconds options
  • 🔒 Screen lock prevention keeps app active continuously
  • 📱 Works in both portrait and landscape modes
  • ⏰ Accurate time display with 12/24 hour format options
  • 🎨 Clean, elegant typography and visual design
  • ⚡ Lightweight and doesn't consume significant resources
  • 🌙 Perfect for bedside/nighttime clock use

Room to Improve

  • 🐛 Settings not persisting (12/24 hour format reverts)
  • 🔋 High battery consumption reported by some users
  • 📱 No landscape mode option (conflicting reports)
  • 🔆 Brightness controls remain visible when dimmed
  • 🐛 Occasional font weight fluctuations
  • 📊 Widget doesn't display current time without opening app
  • 🐛 Conflicts with Siri voice commands (same name as Apple Clock)
  • ⚠️ Screen burn-in potential with prolonged display
  • 🐛 AM/PM indicator appears unexpectedly in some cases
  • 📱 Display text size too small for some users
  • 🐛 App freezing/crashing reported on some devices
Flip Clock:Digital Desk Widget#2

Flip Clock:Digital Desk Widget by 翠玲 施

StandBy Lock Screen & Pomodoro
Strong Contender
🔧 Utilities
4.6😊(69K ratings)
FreeAdsIn-App Purchases
Flip Clock:Digital Desk Widget screenshot 1
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This app provides a classic digital clock widget for your device's home, lock, and standby screens. It offers features like displaying seconds, a calendar, customizable themes, and various timekeeping tools including alarms, timers, and stopwatches. It can also function as a screensaver when charging.

What We Love

  • 👍 Simple and effective
  • 🎨 Aesthetic design
  • ⏱️ Useful timer and alarm features
  • 🔍 Highly visible and readable clock
  • 🤩 Great for productivity and focus

Room to Improve

  • 🔍 Limited customization options
  • 🔋 Battery drain issues
  • 📢 Excessive ads
  • 🔒 Unreliable unlock/restore purchases
  • 🐛 Bugs and glitches
Countdown by timeanddate.com#3

Countdown by timeanddate.com by timeanddate.com

Fun & Festive Countdowns
Worth Considering
🔧 Utilities
2.9😐(125 ratings)
FreeIn-App Purchases
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Create and share exciting countdowns to any event. This app offers fun themes, automatic adjustments for time zones and daylight saving, and notifications for upcoming events. Count up or down from any point in time and share your countdowns with friends.

What We Love

  • 👍 Simple and easy to use
  • 🚀 Accurate countdown timer
  • 💡 Useful for tracking important dates and events
  • 🎨 Variety of themes and backgrounds

Room to Improve

  • 🐛 Crashes and bugs after recent updates
  • 🔒 Paid version doesn't remove all ads
  • 📍 Limited location options
  • 🔧 Difficulty editing or customizing events

More Clock With Seconds Countdown apps to explore

FAQ about Clock With Seconds Countdown

What are the best clock with seconds countdown apps for iPhone?
Clock – Simple & Customizable tops our clock with seconds countdown apps ranking as of September 2026, with a 4.4-star average from 152 App Store ratings, and it's free to download.
Yes — 19 of the top clock with seconds countdown apps we rank are free to download, including Clock – Simple & Customizable and Flip Clock:Digital Desk Widget.
Clock – Simple & Customizable has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 246+ clock with seconds countdown apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app displays the current time in a minimalistic, full-screen design. It focuses on presenting the time clearly and beautifully without unnecessary distractions. You can customize various aspects of the time display to suit your preferences.
The app offers extensive customization for the time format. You can choose between 12-hour or 24-hour format, decide whether to show a leading zero for single-digit hours, and select the precision of seconds displayed, down to thousandths.