No need to carry a heavy computer outdoors—just bring your phone and your radio, and you can decode and transmit FT8/FT4 signals. The app includes built-in time synchronization via GPS and network, helping you avoid FT8 timing issues.
Updated on
Feb 20, 2026
Tools
Data safety
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Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location and Personal info
This app may collect these data types
Location and Personal info
Data is encrypted in transit
Data can’t be deleted
See details
What’s new
✅ Stability Improvements Fix TransactionTooLargeException issues Refactored the app startup flow Strengthened lifecycle handling ✅ Stable FT4 / FT8 Switching Fixed crashes when switching modes Improved synchronization between spectrum and UI display ✅ Enhanced Transmit & Display Experience Visualized transmit error notifications Own transmitted messages now shown in the spectrum display Full support for portrait mode ✅ Backend Enhancements Web-based QSO query interface SOTA CSV export support