Best Time Sync Apps

249+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated September 2026

If you already know Radio Wave Sync, this is the deeper bench. 249+ time sync apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.

Compare top Time Sync Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Radio Wave SyncRadio Wave SyncFree4.5★ (1K)YesYesSep 2026
2World Clock Time Zone WidgetsWorld Clock Time Zone WidgetsFree4.7★ (22K)YesYesSep 2026
3Tick Sync: Watch Time SyncTick Sync: Watch Time SyncFreeNoYesSep 2026
4Atomic Sync : Radio Watch TimeAtomic Sync : Radio Watch TimeFreeYesNoAug 2026
5AtomicClock: NTP TimeAtomicClock: NTP TimeFree4.8★ (5.5K)YesYesSep 2026
6eTCH Sync TimeeTCH Sync TimeFreeNoNoMay 2026
7Haplotic TimeSyncHaplotic TimeSyncFree5.0★ (2)NoNoMay 2026
8TimeZone SyncTimeZone SyncFreeNoNoMay 2026

Top Picks for Time Sync

Radio Wave Sync#1

Radio Wave Sync by 宁 金

Sync Radio Controlled Watch
Editor's Choice
🔧 Utilities
4.5😐(1K ratings)
FreeAdsIn-App Purchases
Radio Wave Sync screenshot 1
Radio Wave Sync screenshot 2
Radio Wave Sync screenshot 3

This app helps synchronize radio-controlled watches by simulating time signal waves. It supports various international time signal standards and offers a 'Beast Mode' for faster synchronization. Simply place your watch near your device's speaker and start the process.

What We Love

  • 🚀 Works as intended
  • 👍 Easy to use
  • 💡 Innovative solution
  • 🔒 Reliable sync
  • ⏱️ Fast sync time

Room to Improve

  • 🐛 Inconsistent performance
  • 💰 Paid version required
  • 🔇 Audio issues
  • 🤖 Ads in paid version
  • 🔁 One-time use only
World Clock Time Zone Widgets#2

World Clock Time Zone Widgets by Overdesigned, LLC

Convert Dates & Calculate UTC
Strong Contender
✈️ Travel
4.7😊(22K ratings)
FreeAdsIn-App Purchases
World Clock Time Zone Widgets screenshot 1
World Clock Time Zone Widgets screenshot 2
World Clock Time Zone Widgets screenshot 3
World Clock Time Zone Widgets screenshot 4
World Clock Time Zone Widgets screenshot 5
World Clock Time Zone Widgets screenshot 6

Easily track the time in multiple cities worldwide with customizable analog or digital clock widgets. Get instant access to local times from your Home Screen, Lock Screen, or Dynamic Island. Includes a conversion tool for comparing times and managing schedules across different zones.

What We Love

  • 👍 Easy to use
  • 🚀 Accurate time display
  • 🌍 Helpful for tracking multiple time zones
  • 💡 Customizable widgets
  • 👍 Simple and clean interface
  • 👍 Useful for international communication and travel

Room to Improve

  • 🐛 Widget issues (not updating, displaying incorrect time)
  • 💰 Ads can be intrusive
  • 🐛 Occasional crashes or bugs
  • 🔋 Widget drains battery
  • 🔒 Lack of iCloud sync between devices

More Time Sync apps to explore

FAQ about Time Sync

What are the best time sync apps for iPhone?
Radio Wave Sync tops our time sync apps ranking as of September 2026, with a 4.5-star average from 1K App Store ratings, and it's free to download.
Yes — 19 of the top time sync apps we rank are free to download, including Radio Wave Sync and World Clock Time Zone Widgets.
Radio Wave Sync shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 249+ time sync apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Radio Wave Sync is designed to help you synchronize radio-controlled watches, especially those that have trouble receiving time signals. It works by simulating the necessary time signal waves that your watch needs to calibrate itself.
To use the app, first set your iPhone/iPad volume to maximum. Then, switch your radio-controlled watch to manual wave receiving mode. Place your watch near the device's speakers and tap the 'start' button. The synchronization process typically takes between 3 to 10 minutes.

Related searches