When the grid goes, the mesh stays.
Storms, earthquakes, and blackouts take the towers down first. Phones survive on batteries for days — FLVSH lets a neighborhood of surviving phones keep talking while the infrastructure comes back.
Disasters have a communication curve: the first hours matter most, and that's exactly when cell service is gone — towers dark, backhaul cut, or simply overwhelmed by everyone calling at once. The phones themselves are fine. It's everything between them that failed.
A mesh has no between. Neighbors checking on neighbors, a shelter coordinating across a building, a family spread over three floors of a dark apartment block — FLVSH keeps short-range coordination alive on battery power, and every additional phone extends the reach.
No single point of failure
There is no tower to lose and no server to overload. If two phones are within relay distance, the message gets through.
Battery-friendly by design
BLE is engineered to sip power. Phones running FLVSH mesh through a blackout on a fraction of what a searching cell radio burns.
Delivery you can verify
In an emergency, 'did it send?' matters. Every message settles to Delivered, Read, or Failed — no false comfort from a spinner.
Communication that fails only when the phones themselves do.