MoyiWave - Atomic Watch Sync

Radio-Controlled Clock Sync

$3.99 · Designed for iPad. Not verified for macOS.

MoyiWave turns your iPhone into a portable time signal transmitter. Sync your Casio Wave Ceptor, Citizen Atomic Timekeeping, or any radio-controlled watch in minutes -- even when you're traveling far from any broadcast tower. --- HOW IT WORKS --- Place your watch near the iPhone speaker, tap Start Sync, and let the encoded signal do its job. Most watches will detect the signal within 2-3 minutes. --- SIX GLOBAL TIME STATIONS --- - JJY 40 kHz / 60 kHz: Japan (NICT) - WWVB 60 kHz: USA (NIST) - DCF77 77.5 kHz: Germany (PTB) - MSF 60 kHz: UK (NPL) - BPC 68.5 kHz: China (NTSC) --- MORE THAN A SIMPLE TRANSMITTER --- Engineering Mode reveals the real-time bit stream, color-coded BIT GRID, and live time code decoding. Perfect for watch enthusiasts, ham radio operators, and anyone curious about how radio time codes really work. --- FEATURES --- - Real-time signal generation with industry-standard timing - AM/PWM/PPM modulation matching each station's spec - Automatic DST handling for DCF77 / MSF / WWVB - Engineering Mode with BIT COLOR waveform and BIT GRID - Live decoded fields: year, day-of-year, weekday, parity bits - Pulse Indicator with realistic signal noise visualization - Dual transmission channels (top earpiece + bottom speaker) - 10-minute auto-stop to save battery - Dark and light themes - Works completely offline -- no account, no data collection --- WHO IS IT FOR? --- - Casio G-Shock, Oceanus, Edifice owners - Citizen Eco-Drive Atomic owners - Seiko Astron and other radio-controlled watches - Hobbyists and engineers studying time code systems --- PRIVACY --- MoyiWave runs 100% offline. No analytics, no ads, no tracking, no account required. --- NOTES --- - Set your watch to manual reception mode (RCVD) for best results - Maximize iPhone volume during transmission - Place watch within 2 cm of the speaker - Some watches (especially metal cases) may need multiple attempts Developed by MoyiLab. Website: www.moyilab.com

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

This update improves sync accuracy and expands watch compatibility: • NTP time calibration — syncs to exact network time instead of your device clock for a more precise signal • Custom watch timezone — set a timezone for domestic-model watches without World Time (JJY / DCF77 / BPC / MSF) • iPad — both speakers now transmit, so either side can sync your watch Thanks for using MoyiWave!

Version 1.1

The developer, PIN YI CHIANG, 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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • PIN YI CHIANG
    Size
    • 2.8 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 15.6 or later.
    • iPhone
      Requires iOS 15.6 or later.
    • iPad
      Requires iPadOS 15.6 or later.
    • iPod touch
      Requires iOS 15.6 or later.
    • Mac
      Requires macOS 12.5 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 4 more
    • English, German, Japanese, Simplified Chinese, Traditional Chinese
    Age Rating
    4+
    Copyright
    • © 2026 MoyiLab
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.