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Android Apps > Tools > Atomic Sync : Radio Watch Time
Atomic Sync : Radio Watch Time icon

Atomic Sync : Radio Watch Time

by qalc.ai · Tools · Free
On Google Play since April 2026 · Data updated 2026-10-17
Google Play

Atomic Sync : Radio Watch Time is made and published by qalc.ai. AppBrain is an independent app data site and isn't affiliated with qalc.ai. The app name, icon, screenshots and description belong to qalc.ai and are shown as published on Google Play.

AppBrain's verdict

Niche
Installs
2.1 thousand
Last updated
April 3, 2026
Ads
Contains ads
Size
22.3 MB

Atomic Sync : Radio Watch Time is a niche app, with 2.1 thousand installs. It doesn't have enough ratings yet to judge what users think.

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

User feedback

Ratings and reviews on Google Play

Comments on Atomic Sync : Radio Watch Time for Android

★★★★☆ Abuzer Rafey · Jun 24, 2026
Please add an option to pay to disable ads and also daylight savings/summer! WWVB allows sending a bit for DST and some devices will be 1 hour off without that bit being set correctly. Thanks!
★★★★★ 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.
★☆☆☆☆ hisham Shaban · Sep 15, 2026
I have citizen echo drive radio-controlled CB0270-87L bought 1 day ago and live in area that the watch can't receive the signal. After installation of the app the watch receive the signal and every thing is perfect and runs smoothly within maximum 3 minutes... Thanks a lot for the developers
★☆☆☆☆ Erich Beck · Sep 1, 2026
Synchronization is completely off for calendar day. Also misses DST. When I synced my Casio G-Shock watch, it set the date to yesterday in the year 2020 (present year is 2026 at the time of this writing) and missed the DST.

Store listing

By qalc.ai, from Google Play

“Sync radio-controlled watches. Works with Casio, Citizen, G-Shock & more”

Atomic Sync : Radio Watch Time Screenshot 1 of 5
Atomic Sync : Radio Watch Time Screenshot 2 of 5
Atomic Sync : Radio Watch Time Screenshot 3 of 5
Atomic Sync : Radio Watch Time Screenshot 4 of 5
Atomic Sync : Radio Watch Time Screenshot 5 of 5
Screenshots by qalc.ai, from the Google Play listing
Description by qalc.ai Written by the developer, not by AppBrain. Click to read.
⏱️ 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

Free forever. No subscriptions. Just sync. ⚡
Official page on Google Play

Safety and technology

Found in the app by AppBrain
Ads
Contains ads
Price
Free
Libraries
?
App size
22.3 MB
Content rating
Everyone

Technologies used by Atomic Sync : Radio Watch Time

13 permissions
Subscribe to see full permission and library details

Releases

Updates seen on Google Play
Version
1.0.0
Launched
April 2026
  • Aug 21, 2026Installs1,000+ installs
  • Jul 10, 2026Installs500+ installs
  • May 15, 2026Installs100+ installs
  • May 1, 2026Installs50+ installs
  • Apr 15, 2026Installs10+ installs
Show all changes Show fewer

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Installs

Tracked by AppBrain
Last 30 days
500
Per day
17
30-day average
Play install range
1+ thousand
Launched
April 2026

Installs over time

Atomic Sync : Radio Watch Time has been installed 2.1 thousand times. Over the past 30 days, it averaged 17 installs per day.

Rankings

Google Play top charts

Google Play Rankings for Atomic Sync : Radio Watch Time

This app is not ranked

About the app and developer

About Atomic Sync : Radio Watch Time

Atomic Sync : Radio Watch Time is a tools app developed by qalc.ai.

Install Statistics

Atomic Sync : Radio Watch Time has been installed 2.1 thousand times. In the last 30 days, the app was installed 500 times.

User Ratings

The app has no ratings yet.

App Information

Atomic Sync : Radio Watch Time is freely available from Google Play. The app 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 since April 2026.

App Performance Report

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Developer information for qalc.ai

qalc.ai

support@qalc.ai

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Frequently asked questions about Atomic Sync : Radio Watch Time

Is Atomic Sync : Radio Watch Time free?

Yes. Atomic Sync : Radio Watch Time is free on Google Play.

Is Atomic Sync : Radio Watch Time still available?

Yes. Atomic Sync : Radio Watch Time is on Google Play, and the last update we saw was on April 3, 2026.

Does Atomic Sync : Radio Watch Time contain ads?

Yes. Google Play lists Atomic Sync : Radio Watch Time as containing ads.

How large is Atomic Sync : Radio Watch Time?

Atomic Sync : Radio Watch Time is 22.27 MB.

Is Atomic Sync : Radio Watch Time suitable for children?

Google Play rates the content of Atomic Sync : Radio Watch Time as suitable for everyone.

How many times has Atomic Sync : Radio Watch Time been installed?

Google Play lists 1,000+ installs for Atomic Sync : Radio Watch Time.

Who made Atomic Sync : Radio Watch Time?

Atomic Sync : Radio Watch Time was developed by qalc.ai. It is listed in the tools category on Google Play.

What are the best alternatives to Atomic Sync : Radio Watch Time?

People looking at Atomic Sync : Radio Watch Time also look at these tools apps: radio watch sync, SyncTime: JJY, WWVB & MSF, JJYEmulator, Smart Watch App: Wearable Sync, Atomic Clock & Watch Accuracy.

Share Atomic Sync : Radio Watch Time

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