Turn Your Screen Into A Signal Fire
An offline emergency signal tool for hikers, climbers and backcountry travelers. No login, no tracking, no network required after first load.
SOS timing: ITU-R M.1677-1. Alpine distress signal: UIAA / ICAR — 6 signals per minute. Ground-to-air codes V (need assistance) and X (need medical help): ICAO Annex 12, Search and Rescue. Rescue whistle 3-blast convention: international wilderness standard.
Signalfire is a supplemental signaling aid, not a substitute for a Personal Locator Beacon (PLB), satellite messenger (e.g. Garmin inReach), VHF radio, or emergency phone services (112 / 911). Battery, screen brightness, audio level, and visibility conditions all affect effectiveness. The authors accept no liability for any outcome arising from use of this tool.