This app let you encode/decode and transmit Morse Code easily.
Send Morse Code via audio and light with flexible WPM and pitch.
Receive and decode Morse Code from audio or light signal.
Run-time communication interface is provided.
A specific designed SOS function allow you to send distress signal with extreme minimum power consumption.
Pro version: https://play.google.com/store/apps/details?id=com.erdatsai.morsecodeagentpro
Suggestion, recommendations, bug reports, please visit the forum: https://morsecodeagent.com/