TimeWave: Atomic Watch Sync
Radio-Controlled Clock Signal
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
TimeWave is a professional time-signal simulator designed for radio-controlled watches and clocks.
When your watch cannot reliably receive a terrestrial time signal, TimeWave can generate a compatible time code through your iPhone or iPad speaker, wired headphones, or supported Bluetooth audio devices. This helps your watch perform manual reception and synchronize its time wherever you are.
No ads. No account required. No personal data uploaded. Core synchronization features work offline.
SUPPORTED TIME SIGNALS
• BPC — China
• JJY40 / JJY60 — Japan
• WWVB — United States
• MSF — United Kingdom
• DCF77 — Germany
KEY FEATURES
ENVIRONMENT PRE-CHECK
Before transmission begins, TimeWave checks device volume, battery level, ambient noise, and magnetic-field conditions. It then provides practical recommendations to help reduce common synchronization failures.
SMART OUTPUT TUNING
TimeWave adjusts signal parameters for different audio output paths, including the built-in speaker, wired headphones, and supported Bluetooth audio devices, helping maintain a stable transmission.
LOCAL TIME MODE
Designed for imported and overseas watch models. Generate a compatible time signal using your selected local time zone, making it easier to synchronize watches that do not support your local transmitter.
WATCH-SPECIFIC GUIDES
Follow step-by-step guides for popular radio-controlled watches from Casio G-Shock and Multiband 6, Citizen Eco-Drive, Seiko, Junghans, Braun, and more.
Guides may include:
• Manual reception instructions
• Antenna-position diagrams
• Recommended watch placement
• Reception-status indicators
• Troubleshooting suggestions
Actual compatibility depends on the watch model and the time-signal standard it supports.
MULTIPLE PLACEMENT METHODS
View clear diagrams for positioning your watch near an iPhone or iPad speaker, wired headphone cable, or supported audio device.
OUTPUT PROTECTION
TimeWave controls signal amplitude according to the selected output path and provides warnings when device conditions may be unsuitable for transmission.
LIVE SIGNAL VISUALIZATION
Watch the current time code and transmission waveform in real time, with a clear view of progress and remaining time.
SYNC HISTORY
Save synchronization sessions and record whether each attempt succeeded or failed. Review previous attempts to compare stations, placement methods, and device settings.
PRIVATE AND OFFLINE
TimeWave does not require an account and does not upload your personal data. Core time-signal generation and watch guides are available offline.
HOW TO USE
1. Choose a supported time-signal station or enable Local Time Mode.
2. Put your watch into manual reception mode. On some G-Shock models, this may be shown as RC, RX, or GET.
3. Position the watch antenna close to your iPhone or iPad speaker, wired headphone cable, or supported audio device, following the in-app diagram.
4. Increase the volume and keep both the watch and device still.
5. Start transmission and wait approximately 2–10 minutes. Check the reception indicator on your watch to confirm the result.
TIPS FOR BETTER RECEPTION
• Keep the watch and device away from chargers, power adapters, computers, televisions, speakers, and other sources of electromagnetic interference.
• Watch reception depends on the model, antenna direction, volume, output device, placement, and surrounding environment.
• If your imported watch does not support your local transmitter, select a compatible signal standard and use Local Time Mode when needed.
• For the best results, select your watch brand or model in TimeWave and follow the recommended placement guide.
TimeWave is an independent utility and is not affiliated with, endorsed by, or sponsored by any watch manufacturer or time-signal authority. Brand and product names are used only to describe compatibility.
Questions or suggestions?
Contact: [fish2next@gmail.com](mailto:fish2next@gmail.com)
Fixed an issue where some signal modes could not start synchronization and might cause the app to close unexpectedly.
Improved audio waveform playback stability and overall synchronization reliability.
The developer, 毅 何, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 毅 何
- Size
- 3.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 6 more
- English, Arabic, German, Japanese, Korean, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lifetime Membership $2.99
- Buy Me a Coffee $0.99
- Copyright
- © 2026 HeYi