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Best Countdown Calculator Apps

249+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated September 2026

Every iPhone needs a few good countdown calculator apps. We benchmark 249+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Countdown Calculator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Countdown StarCountdown StarFree4.8★ (215K)YesYesSep 2026
2CountdownCountdownFree4.8★ (186K)YesYesSep 2026
3Countdown Timer - Clock WidgetCountdown Timer - Clock WidgetFree4.5★ (1.4K)YesYesSep 2026
4Countdown ‎Countdown ‎Free3.8★ (11K)YesYesSep 2026
5Countdown & Count Up TimerCountdown & Count Up TimerFree4.7★ (2.3K)YesNoSep 2026
6Teller1Teller1Free5.0★ (1)NoNoAug 2026
7Retirement Countdown ·Retirement Countdown ·Free4.8★ (12K)YesYesSep 2026
8Age Calculator-Birth CountdownAge Calculator-Birth CountdownFree—NoNoAug 2026

Top Picks for Countdown Calculator

Countdown Star#1

Countdown Star by Joseph Merrill

Countdowns for Every Event
Editor's Choice
🎬 Entertainment
4.8😊(215K ratings)
FreeAdsIn-App Purchases
Countdown Star screenshot 1
Countdown Star screenshot 2
Countdown Star screenshot 3
Countdown Star screenshot 4
Countdown Star screenshot 5
Countdown Star screenshot 6

Track time until or since important life events. Set custom timers for birthdays, holidays, anniversaries, and more. Personalize with your own photos and share progress with friends.

What We Love

  • 👍 Great app
  • 🚀 Easy to use
  • 💡 Customizable backgrounds
  • 👍 Helpful for tracking events
  • 👍 Useful for long-distance relationships
  • 👍 Excellent for planning and motivation

Room to Improve

  • 🐛 Widget not working
  • 🐛 Wallpaper feature not working
  • 🐛 Countdown inaccuracies
  • 🐛 Notifications not working
  • 🐛 Crashes and bugs
  • 💰 Paid features required for full functionality
Countdown#2

Countdown by Find Appiness LLC

Day Counter: Timer & Widget
Strong Contender
🔧 Utilities
4.8😊(186K ratings)
FreeAdsIn-App Purchases
#44in Utilities
Countdown screenshot 1
Countdown screenshot 2
Countdown screenshot 3
Countdown screenshot 4
Countdown screenshot 5
Countdown screenshot 6

Easily track important dates and events with a customizable countdown timer. Set reminders, organize events with tags, and view upcoming dates on your home screen or Apple Watch. Syncs across devices and offers various counting options.

What We Love

  • 👍 Simple and intuitive interface
  • 🎨 Customizable colors and emojis
  • ⏰ Accurate countdown tracking
  • 🔔 Helpful reminders and notifications
  • 💰 One-time payment for premium features

Room to Improve

  • 💸 Paid widget feature
  • 🔍 Lack of instructions/guidance
  • 🔀 Inconsistent countdown display on widget
  • 📅 Limited repeat options for events
  • 🖼️ No option to use custom photos

More Countdown Calculator apps to explore

FAQ about Countdown Calculator

What are the best countdown calculator apps for iPhone?
Countdown Star tops our countdown calculator apps ranking as of September 2026, with a 4.8-star average from 215K App Store ratings, and it's free to download.
Yes — 20 of the top countdown calculator apps we rank are free to download, including Countdown Star and Countdown.
Countdown Star shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 249+ countdown calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Countdown Star helps you track the time remaining until your favorite events or count up from past significant dates. You can set timers for birthdays, holidays, vacations, anniversaries, and more, seeing the exact time left in seconds, minutes, hours, days, months, or years.
Key features include the ability to add and customize your own events with personal wallpapers or photos, display timers on Apple Watch and in the Today Widget, set precise event times, adjust time units with a slider, and share event progress with friends.

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