Best Atomic Clock App

245+ iOS apps curated and reviewed

4.4 avg rating
15 free apps
Updated November 2026

From beginner-friendly picks to power-user tools, our atomic clock app list covers 245+ iPhone apps updated through November 2026. Compare ratings, prices, and screenshots in one place.

Compare top Atomic Clock App (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1AtomicClock: NTP TimeAtomicClock: NTP TimeFree4.8โ˜… (5.6K)YesYesNov 2026
2Atomic Clock PROAtomic Clock PROFree4.7โ˜… (10K)YesYesNov 2026
3Atomic Clock: Exact TimeAtomic Clock: Exact TimeFree3.0โ˜… (2)NoNoOct 2026
4Atomic Clock (Gorgy Timing)Atomic Clock (Gorgy Timing)$1.994.8โ˜… (5K)NoYesNov 2026
5Radio Wave SyncRadio Wave SyncFree4.5โ˜… (1.1K)YesYesNov 2026
6Atomic Clock โ€“ Precision TimeAtomic Clock โ€“ Precision TimeFree4.9โ˜… (7)NoYesNov 2026
7The Clocks: Alarm, World ClockThe Clocks: Alarm, World ClockFree4.5โ˜… (22K)YesYesNov 2026
8Atomic Clock AppAtomic Clock App$2.99โ€”NoNoOct 2026

Top Picks for Atomic Clock App

AtomicClock: NTP Time#1

AtomicClock: NTP Time by Timo Partl

Precision Clock, UTC Reference
Editor's Choice
๐Ÿ”ง Utilities
4.8๐Ÿ˜Š(5.6K ratings)
FreeAdsIn-App Purchases
AtomicClock: NTP Time screenshot 1
AtomicClock: NTP Time screenshot 2
AtomicClock: NTP Time screenshot 3
AtomicClock: NTP Time screenshot 4
AtomicClock: NTP Time screenshot 5

This app displays the exact current time synchronized with NTP servers, offering a customizable clock view for precise time checks. It's ideal for setting watches, verifying timestamps, or comparing local and network time.

What We Love

  • ๐Ÿš€ Accurate time
  • ๐Ÿ‘ Highly customizable
  • ๐Ÿš€ Precise to the second
  • ๐Ÿ‘ Easy to use
  • ๐Ÿ‘ Helpful for setting watches
  • ๐Ÿ‘ Great for hobbyists and professionals
  • ๐Ÿ‘ Excellent time standard for watches
  • ๐Ÿ‘ Simple and straightforward

Room to Improve

  • ๐Ÿ› Server connection issues
  • ๐Ÿ” Limited time zone options
  • ๐Ÿ’ฐ Ads diminish clock view
  • ๐Ÿ” Lacks some advanced features
  • ๐Ÿ” Redundant for some users
Atomic Clock PRO#2
4.7๐Ÿ˜(10K ratings)
FreeAdsIn-App Purchases
Atomic Clock PRO screenshot 1
Atomic Clock PRO screenshot 2
Atomic Clock PRO screenshot 3
Atomic Clock PRO screenshot 4
Atomic Clock PRO screenshot 5
Atomic Clock PRO screenshot 6

This app provides highly accurate time by syncing with official atomic clock servers. Customize your display with digital or analog views, personal backgrounds, and adjustable sizes. It's perfect for precise timekeeping, travel, or as a personalized desk clock.

What We Love

  • โญ Accurate time display
  • ๐Ÿ“Ÿ Useful for timing events
  • ๐Ÿ•ฐ๏ธ Helpful for setting other clocks
  • ๐Ÿ” Large, easy-to-read clock face

Room to Improve

  • ๐Ÿ’ธ Subscription model for ad-free version
  • ๐Ÿ“ข Excessive advertisements
  • ๐Ÿ” Small font for seconds display
  • ๐Ÿ”€ Difficulty in displaying both analog and digital clocks simultaneously

More Atomic Clock App apps to explore

FAQ about Atomic Clock App

What is the best atomic clock app for iPhone?
AtomicClock: NTP Time tops our atomic clock app ranking as of November 2026, with a 4.8-star average from 5.6K App Store ratings, and it's free to download.
Yes โ€” 15 of the top atomic clock app we rank are free to download, including AtomicClock: NTP Time and Atomic Clock PRO.
AtomicClock: NTP Time shows ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 245+ atomic clock app on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.