Cadenza
Learn Morse by ear.
Operators do not read Morse, they hear it. Cadenza teaches it that way from the first minute: one character at a time, at full speed with wider gaps, until the rhythm arrives as a letter instead of a puzzle.
Features
Koch, at real speed
Characters are sent fast from the start and the silence between them is stretched instead. You never learn to count dots, which is the habit that stops people at 10 words per minute.
Listen to real signals
Point your phone at a clean CW signal and read it as text. Everything is decoded on the device, and the audio is never recorded, saved or sent anywhere.
Send a postcard
Turn a short message into a rhythm your friend can hear. They get a picture and a link; the answer stays hidden until they open it.
How It Works
Start with two letters
K and M, sent by ear. Answer what you hear. A new character joins only once you are steady on the ones you have.
Practice a few minutes a day
Short sessions, a daily challenge and a streak. Sound, screen light, the camera flash or vibration, whichever suits where you are.
Use it on the air
Words, callsigns, full QSOs and pileups when you are ready, plus head copy for reading without writing anything down.
Private by design
Cadenza works with the aeroplane mode on.
- No account, no login, no cloud. Your progress lives on your phone.
- Fully offline. Nothing about your practice leaves the device.
- The decoder listens in memory only. Audio is never written to disk or transmitted.
- Free to learn the alphabet, decode signals and send postcards. Pro adds words, callsigns, QSO and pileup practice, head copy and sending, as a subscription or a one-time purchase.
Hear your first letter today
Ten minutes a day is enough to start.