SignalCrafter

An offline field-signaling kit for Morse broadcasts, flag-hoist readbacks, NATO/ICAO phonetics, ground-to-air symbols, Beaufort wind reference, and fast drills. No account, no cloud, no tracking.

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Timed Morse Broadcasts

Type a message or choose a field preset, then plan the WPM, repeat count, pause interval, word count, unit count, single-send duration, and total send time before broadcasting with screen flash, tone, and haptics.

Flag Hoist Composer

Build a readable A-Z signal-flag hoist, turn substitute flags on or off for repeated letters, inspect skipped characters, and tap individual flags for meaning and detail.

Offline Almanac

SignalCrafter includes Morse letters and numerals, prosigns, practice words, NATO/ICAO phonetic pronunciation, international signal flags, ground-to-air symbols, and the Beaufort scale.

Drill Mode

Practice Morse, flags, and phonetics with a streak score and best-streak memory so the reference material turns into recall instead of just a lookup table.

Research Basis

The 1.1 upgrade follows standard Morse unit spacing, International Code of Signals flag alphabet conventions, and NATO/ICAO spelling alphabet references. It exposes timing and readback details that lighter Morse-only apps often hide.

Built for Low Connectivity

Everything is bundled on device. SignalCrafter does not require a network connection, account, analytics SDK, advertising identifier, camera, microphone recording, location, contacts, or HealthKit.

Built for the Real World

Works in airplane mode and low-connectivity settings
Timed Morse planning with repeat and pause controls
Signal-flag hoist composer with substitute flags
High-contrast interface for quick outdoor scanning
No account, no ads, no tracking, no developer server
Preferences and drill streaks stay local on the device

SignalCrafter is an educational reference and training tool. It is not a certified emergency beacon, marine radio, aircraft signal device, or substitute for official procedures or proper emergency equipment.