Sync radio-controlled watches. Works with Casio, Citizen, G-Shock & more
Pros & Cons
Offline operation with signals generated locally for reliability
Supports multiple official time signals (WWVB, DCF77, JJY, MSF, BPC)
Beast Mode via rewarded video offers faster sync with no subscriptions
Privacy-first design: no location access, no personal data collection, no account required
Not ranked in any top lists
Performance depends on watch model and environment; results may vary
Requires proximity between phone and watch for optimal synchronization
About Atomic Sync : Radio Watch Time
Atomic Sync : Radio Watch Time is a tools app developed by qalc.ai.
Download Statistics
Atomic Sync : Radio Watch Time has been downloaded 630 times. In the last 30 days, the app was downloaded 240 times.
User Ratings
The app has no ratings yet.
App Information
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.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play April 2026.
Description
⏱️ 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.
🌍 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)
✨ HOW IT WORKS: 1️⃣ Select your region or time signal 2️⃣ Place your phone near your watch (see visual guide) 3️⃣ Tap Start and wait 1-10 minutes 4️⃣ Your watch syncs to atomic time — done!
⚡ 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.
🔔 SMART REMINDERS: Set local notifications to remind you to sync your watch weekly, bi-weekly, or monthly. Never lose atomic precision again.
🌐 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
🎨 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
🔒 PRIVACY FIRST: • No location access required • No personal data collected • No account registration needed
✅ 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.
💡 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)
⚠️ 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: ⏱️ 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.
✨ 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
★★★★★Education Central· 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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