Sync radio-controlled watches. Works with Casio, Citizen, G-Shock & more
Pros & Cons
Offline, local signal generation for privacy and reliability
Privacy-first approach: no location data, no personal data, no account required
Supports multiple major time signals (WWVB, DCF77, JJY, MSF, BPC; RBU coming soon)
Beast Mode provides faster sync via rewarded video with no subscriptions
Not ranked in top lists yet
Zero user rating (0.0) with 0 ratings
New app age (~29 days) with modest initial downloads
About Atomic Sync : Radio Watch Time
Atomic Sync : Radio Watch Time is a tools app developed by qalc.ai.
How many times has Atomic Sync : Radio Watch Time been downloaded?
Atomic Sync : Radio Watch Time has been downloaded 410 times. In the last 30 days, the app was downloaded 270 times.
What is the rating of Atomic Sync : Radio Watch Time?
Atomic Sync : Radio Watch Time has no ratings yet.
Is Atomic Sync : Radio Watch Time free?
Atomic Sync : Radio Watch Time is free to download. The APK download size is 22.27 MB. The latest version available is 1.0.0. The last update was on April 3, 2026.
What are the requirements for Atomic Sync : Radio Watch Time?
The app has a content rating of Everyone. The app has been available on Google Play April 2026.
Description
โฑ๏ธ Sync Your Radio-Controlled Watch in Minutes!
Atomic Sync emulates official atomic time signals to synchronize your radio-controlled watch — no tower reception needed. Works with Casio G-Shock, Citizen, Lacrosse, Junghans, Braun and other atomic watches.
๐ SUPPORTED TIME SIGNALS: • WWVB (60 kHz) — United States • DCF77 (77.5 kHz) — Germany / Europe • JJY40 / JJY60 (40/60 kHz) — Japan • MSF (60 kHz) — United Kingdom • BPC (68.5 kHz) — China • RBU (66.66 kHz) — Russia (coming soon)
โจ HOW IT WORKS: 1๏ธโฃ Select your region or time signal 2๏ธโฃ Place your phone near your watch (see visual guide) 3๏ธโฃ Tap Start and wait 1-10 minutes 4๏ธโฃ Your watch syncs to atomic time — done!
โก BEAST MODE (Premium Sync): Need faster sync? Watch a short rewarded video to activate Beast Mode — our enhanced signal algorithm for quicker, more reliable synchronization. Unlimited use, no subscriptions.
๐ SMART REMINDERS: Set local notifications to remind you to sync your watch weekly, bi-weekly, or monthly. Never lose atomic precision again.
๐ OFFLINE & ACCURATE: • All signals generated locally — no internet required for sync • Optional NTP time source sync for maximum accuracy when online • Last known time cached for offline use
๐จ USER-FRIENDLY DESIGN: • Dark/Light theme (auto-switch) • Universal positioning guide with animated signal waves • Simple 4-step flow, no brand selection needed • 16 languages supported
๐ PRIVACY FIRST: • No location access required • No personal data collected • No account registration needed
โ COMPATIBLE WITH: Casio G-Shock, Pro Trek, Edifice • Citizen Eco-Drive • Lacrosse Technology • Junghans Mega • Braun watches • And any watch supporting WWVB/DCF77/JJY/MSF/BPC signals.
๐ก TIPS FOR SUCCESS: • Use maximum phone volume during sync • Keep phone and watch still, 2-10 cm apart • Avoid metal surfaces and electronic interference • Try near a window for better signal propagation (optional)
โ ๏ธ DISCLAIMER: Atomic Sync is a third-party tool and is not affiliated with, endorsed by, or connected to Casio, Citizen, or any watch manufacturer. Time signal emulation is for personal use only. Success depends on watch model, environment, and device hardware.
Recent changes: โฑ๏ธ Atomic Sync is here!
Sync your radio-controlled watch with atomic time signals — no tower needed. Supports WWVB, DCF77, JJY, MSF, BPC. Works with Casio G-Shock, Citizen, Lacrosse & more.
โจ Features: • 5+ official time signals • Beast Mode for faster sync (watch ad) • Offline mode — no internet required • Smart reminders (weekly/monthly) • 16 languages • Dark mode • Privacy-first
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Comments on Atomic Sync : Radio Watch Time for Android
โ โ โ โ โ Education Centralยท Jun 5, 2026
Fantastic app that's surprisingly free. Does exactly as promised. Simple to use. I needed to manually synch the time on my G-Shock M5610 as I'm not within the influence of the six radio transmitter stations. I managed to get a successful signal from the West Japan station after failing to obtain a signal from the China station.
Google Play Rankings for Atomic Sync : Radio Watch Time
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Technologies used by Atomic Sync : Radio Watch Time
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