No towers.
No servers.
Justphysics.
Hopper builds a live encrypted mesh from the radio chips already inside your iPhone or Android. Here's exactly how a message travels from you to anyone, anywhere, offline.
Message Route — Live Mesh Simulation
Your message securely bounces through nearby Hopper devices until it reaches its destination — even if the recipient is far out of direct range.
One app. No sign-up.
Download Hopper on iOS or Android. No account, no phone number, no email. A cryptographic keypair is generated locally and never leaves your device.
No email · No password · No cloud
Find peers. Instantly.
Hopper pulses a Bluetooth LE advertisement every 400 ms. Nearby devices respond with a signed hello. A cryptographic handshake completes in under 80 ms — no pairing, no permissions dialog.
Route around anything.
Every node shares its peer table. Hopper builds a live topology graph and reroutes automatically if a relay drops. The mesh self-heals in under 1.2 seconds.
End-to-end. Every hop.
Each message is AES-256-GCM encrypted to the recipient's public key before it enters the mesh. Relay nodes are blind couriers — they forward bytes they can never read.
Ready to hop off the grid?
Available on iOS and Android. Join the mesh in under 30 seconds.