Telegro: Morse code trainer
Learn Morse code by ear.
With the Koch method you start with two characters; once accuracy reaches 90%, the next one is added. Listening, sending and translating are in the same application, and progress is tracked character by character.
$6.99One-time purchase14-day refund
Key features
- Koch method
- Starts with two characters in the LCWO order; at 90% accuracy over a whole session, the next character is unlocked. Lessons can also be chosen manually.
- Farnsworth spacing
- Character speed 5–40 wpm with a separate effective speed; tone 400–1000 Hz and volume. Elements have cosine-shaped edges, so there are no clicks.
- Listen and copy
- Koch groups, words, Q codes, made-up call signs and QSO lines are played; the answer is scored character by character (correct, wrong, missing, extra).
- Send
- Straight key (press and hold; touch, mouse, pen or Space) and iambic A / B paddles; dot and dash memory, and a decoder that adapts to the sender's speed.
- Translate
- Text ↔ Morse in both directions; playback with the current character highlighted, saving and sharing as WAV, creating a drill from text.
- Chart
- Letters, digits, ITU punctuation, prosigns (AR, SK, BT, KN …) and national characters (marked as non-ITU); plays on tap.
Data processing and privacy
Telegro generates its sounds on this device; the microphone is not used. Drills, progress and settings are stored on this device (in the browser's IndexedDB storage); nothing is sent to any server.
Get Telegro
Try it in the browser without installation; for continued use, purchase the version for macOS, Windows or Linux.