KeyerLab: Learn Morse Code

KeyerLab is built for radio amateurs who want to learn CW from scratch and build real speed. SENDING • Practice with on-screen touch paddles or your own paddle via a USB-TTL adapter + OTG cable (CP210x, CH340, FTDI, PL2303). • Iambic A, Iambic B and straight key modes; click-free sidetone, adjustable speed and pitch. • Target letters appear as tiles that light up green or red as you send. • Timing analysis: your letter and word spacing and dah/dit ratio are measured, with a paper-tape view and tips. KOCH METHOD • Start with two letters at full speed. Reach 90% over the last 50 characters and the next letter is added automatically. • Your weak letters come up more often. COPY TRAINING • The app sends, you type. Farnsworth spacing lets you learn at a high character speed. • Sources: Koch letters, weak letters, callsigns, words, abbreviations, Q-codes and QSO phrases. • Instant character recognition (ICR): a single letter is sent, you press its key; your reaction time is measured and slow letters come back more often. • Real band conditions: adjustable noise, QSB (fading) and a second station nearby (QRM). CONTEST MODE • Callsigns one after another: copy correctly and the speed goes up, miss and it drops. Score, personal best and history. QSO SIMULATOR • The app plays the other station: it calls CQ, gives a report and signs off. You answer with your paddle. • The letter being sent is shown large and highlighted in the text. CW DECODER • Turns Morse from the microphone or line-in (your receiver's audio output) into text. • Finds the pitch and speed automatically; spectrum and signal meter included. PROGRESS • Daily goal, practice streak and badges. • Daily practice time, accuracy and speed charts; per-letter accuracy table. English and Turkish interface, dark and light themes. Free; remove ads with a one-time purchase. 73!

First release: Koch method, iambic paddles, copy training, ICR, contest mode, QSO simulator and CW decoder.