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First release: Koch-method lessons for all 36 letters and numbers (free), copy practice, Morse translator with sound and screen flash, tap key, and a reference chart.
Learn Morse code by ear — all 36 letters & numbers free. Translator & key too.
Learn Morse code (CW) by ear with the Koch method — and never hit a paywall halfway through the alphabet. All 26 letters and 10 numbers are free, forever. ■ Learn by sound, not by chart • Koch method: start with just 2 characters (K and M) • Hear a character, tap what you heard. 20 questions per lesson, about 2 minutes • Score 90% and the next character is added • Accuracy for every character, plus your daily streak • Copy practice: type the words and ham abbreviations you hear (CQ, TNX, 73…) ■ Clean, accurate timing • Tones are generated inside the app as one continuous signal, so spacing stays exact on every phone • Character speed 5–25 WPM with Farnsworth spacing (fast characters, longer gaps — the recommended way to learn) • Adjustable tone pitch (400–1000 Hz) • A short lead-in so you never miss the first sound ■ Morse code translator • Text → Morse: hear it and watch the screen flash with the sound • Morse → Text: dot, dash, space and slash keys; reads ·, •, −, — and _ too • Characters it can't read show as "?" and are listed, so you know exactly what went wrong • Prosigns like and , accented letters, and Japanese Wabun (kana) • Copy the result with one tap ■ Tap key • Short tap = dot, long press = dash. Send Morse yourself and see it decoded ■ Reference chart • A–Z, numbers, punctuation, prosigns, Q codes with meanings, and Wabun. Tap any character to hear it ■ No extra permissions • No camera, no microphone. Your progress is saved on your phone and included in Android backup ■ Pipkey Pro (one-time purchase, no subscription) • No ads • Punctuation, prosigns, Q codes and Japanese Wabun lessons • Speeds up to 50 WPM The free version shows ads (a banner, and occasionally a full-screen ad after a lesson). Letters & numbers lessons and the translator stay free forever. Made by elle.dev Privacy policy: https://nskn-apps.web.app/en/apps/morse-trainer/privacy/ Terms: https://nskn-apps.web.app/en/terms/