A cipher tool for your pocket
Encode, decode, send.
Morse code with sound and light and 24 ciphers from Caesar to pigpen. Free, no sign-up, works offline.
27 characters
Result · Caesar cipher
Phhw dw wkh rog rdn dw ilyh
History 0 messages
Nothing here yet. Messages are stored only on this device.
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Main navigation
- Morse studioPlay a message as sound, flashlight or screen flashes. Tap a telegraph key or let the app listen.
- TrainingLearn Morse code lesson by lesson - from Cadet to Ciphernaut.
- Puzzle linkSend a friend an encrypted message with hints. They solve it right in the browser.
- Print for clubsCipher cards on A4, with or without a key, and a printable Morse chart.
Tip: add CIPHERNAUT to your home screen - it then works like an app, even offline.
Ciphers are a game, not a way to protect secrets. Anyone who knows the cipher can read the message.