Learn and practice Morse Code by touching the screen to generate tones. Adjust tone frequency from 300 Hz to 1200 Hz and control volume. Send dots with short touches and dashes with longer holds.
by Ronald Nicholson★ 4.528 ratingsEducationFreeData updated 2026-09-08
Learn flag signals and their meanings with interactive quizzes and explanations. Practice Morse code and flag alphabets in multiple languages. Send and receive semaphore signals with visual guides for both sending and receiving.
Nd play test tones including sine, rectangular, triangular, and sawtooth waves. Create and play frequency sweep tones in ascending and descending directions. Adjust frequency, amplitude, and duration settings.