Radio Wave Sync

By: 宁金

Sync Radio Controlled Watch

Features & Capabilities

Radio Wave Sync is a time signal simulator to calibrate radio-controlled watches, including Casio G-Series. It supports major signals: BPC (China), WWVB (USA), JJY40/60 (Japan), DCF77 (Germany), MSF (UK). Beast Mode increases signal frequency for faster syncing.

Usage & tips: 1) Max volume on your device. 2) Put the watch in manual receive mode. 3) Tap Start and place the watch near the speaker. 4) Wait 3–10 minutes for sync. Notes: use in a quiet environment to reduce interference; ensure the volume is high for best results.

User Growth & Download Statistics

App Developer Tools Education

By:

宁金

Rating:

4.50

(1,015) 2 new ratings

Version:

1.0.14 Last updated: 2023-02-28

Version code:

855179142

Creation date:

2019-10-29

Compatible devices:

Size:

14.85MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-08

Compare stats and ranking:

Ranking

# 58,819 ▲ 21

Other rankings

#34 in sync keyword 43 ▼ 12

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

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Developed by:

宁金

Apple Apps Store

https://apps.apple.com/us/app/radio-wave-sync/id1484233572

User Reviews

Radio Wave Sync is praised for real‑world WWVB syncing across Casio, Citizen, and other atomic clocks and for easy setup, often delivering quick results when paired with a Bluetooth speaker. However, reviewers repeatedly report no audible signal, reliability issues or OS compatibility problems, outdated status, pricing/ads concerns, and mixed results across devices. The app’s value hinges on tolerance for audio issues and paid features, but it can deliver rapid, satisfying clock sync for some users while frustrating others.

Pros

Works across multiple watch brands and atomic clocks (Casio, Citizen, G-Shock) to sync WWVB signals.
Often fast results, with users reporting successful sync in under five minutes.
Simple, straightforward setup and operation.
Can improve signal by using a Bluetooth speaker, boosting reliability.
Real-world success in varied environments and with long-standing clocks.

Cons

No audible signal or audio issues; many users report no sound or crackling instead.
Reliability concerns and reports that the app stops working on certain devices/OS versions; appears unupdated.
Premium features gated behind a paid upgrade; reports of restore issues and ads.
Ads and data-tracking concerns; intrusive full-screen ads and privacy concerns.
Requires external speaker for reliable use; phone speaker alone is usually insufficient.

Recent reviews

Nothing I try works. The Casio simply will not sync. I put it in a dead silent room and full volume with the phone speaker 1mm from the watch. ERR. Always ERR.