Hotaglow: Outdoor SOS Light

On a dark trail or in a blacked-out room, your phone becomes an offline SOS beacon of light and sound. Strobe, rescue whistle, off-grid mesh/QR. Rescue features free.

Hotaglow turns your phone into an offline SOS beacon using light, sound, and radio - for the outdoors and for emergencies. From the trail, the campsite, and the dark walk home, to blackouts and disasters: call for help even with no signal, no Wi-Fi, and no power.

WHEN YOU'LL USE IT

• Hiking, camping, fishing, solo trips - signal your position with a powerful light after dark
• Walking home at night - a safety alarm and light to protect yourself
• Car camping, blackouts, outages - light your hands and send a signal
• Festivals and events - a beacon when you get separated from your group
• And earthquakes, typhoons, and outages - ready when the network goes down

FULLY OFFLINE BY DESIGN

• We run no servers - zero analytics SDKs, zero ad SDKs, no account
• Every rescue feature works in airplane mode and out of coverage
• Your data never leaves your device - the only thing that needs a connection is buying or restoring PRO, which the App Store handles

BE SEEN - LIGHT

• Screen strobe: flashes the whole display at maximum brightness as a rescue light
• SOS in Morse (... --- ...) and steady flashes visible from a distance
• Marquee banner: shows SOS / HELP in large scrolling text

BE HEARD - SOUND

• 8 survival sound signals: rescue whistle, personal alarm, CPR 100 BPM pacer, high-freq alert, and more
• Acoustic modem: send short messages by sound when your voice can't carry

BE FOUND - RADIO (no network needed)

• Nearby mesh relay (TTL 5): hops your SOS phone-to-phone with no cell tower (iPhone to iPhone, or Android to Android; acoustic and QR work between any devices)
• QR carousel: show a QR on screen, the other phone reads it with its camera - fully offline
• Inbox to read messages from people nearby

READY FOR DISASTERS, TOO The gear you use outdoors becomes your emergency kit. When the network drops first, Hotaglow keeps working on the device alone - no new skills to learn. Everyday use is your drill.

HOTAGLOW PRO (one-time ¥500 / in-app purchase) Unlocks tools you'll use every day, outdoors and at home. All rescue features stay free.

• Custom light (color & rate) for a camp lantern or signal flash - Custom tone / any-BPM metronome - Offline QR maker - Outdoor sounds (bear bell, animal deterrent) to prevent encounters - Free-text SOS broadcast - Marquee presets - Custom home layout

DESIGN A fixed tactical UI - pure-black background, a single accent color, monospaced type - for low power draw and maximum legibility in the dark and under stress.

IMPORTANT SAFETY NOTICE Hotaglow is NOT a replacement for official emergency services (911 / 119 / 112, etc.). In an emergency, contact the authorities first whenever possible. This app does not guarantee rescue or survival; it is a tool to supplement and extend your ways of signaling for help. The screen-strobe and light-flash features produce intense flashing light - use with caution if you have a history of photosensitive epilepsy.