Open the Signal tab, type a message (or tap a preset like SOS), set the speed, and tap Broadcast. The screen flashes, a tone plays, and the phone vibrates in Morse, all in sync.
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Help for Signalcraft, the offline signaling almanac and Morse broadcaster for iPhone and iPad.
In the broadcast view the whole screen flashes between black and amber on each Morse element. Hold the phone up so the flash is visible to your recipient. Tap Replay to send it again, or Done to exit.
Use the three toggles on the Signal tab to choose which channels broadcast. You can send light only, sound only, vibration only, or any combination.
Check that the ringer or media volume is up and the silent switch is off. Morse tones and spoken phonetics play through the speaker; Signalcraft never uses the microphone.
The Almanac tab holds Morse code, the NATO phonetic alphabet, all 26 signal flags, ground-to-air survival symbols, and the Beaufort scale. Tap an entry to hear it or to open a full-screen view.
On the Morse screen, switch between Standard and Slow speed, then tap letters or practice words to train your ear. The Drill tab quizzes you on Morse, flags, and phonetics.
Everything is bundled in the app. Signalcraft needs no network, no account, and no sign-in, and works fully in airplane mode.
Contact through the App Store product page with your device model, iOS version, app version, and a short description of what happened.