01Bluetooth
People nearby
Phone to phone in the same room, building or camp; nothing but the app.
- Range
- tens of metres
- Cost
- free
Off-grid messenger · Phase 0.5
Messages that don't need towers.
Chat that finds its own path — Bluetooth to people nearby, LoRa mesh across the city, satellite to anywhere on Earth. No accounts, no phone numbers, nothing in between can read you.
iOS build 7 · in App Store review
- E2E
- device to device, on every path
- 34 s
- orbit → delivery proof, measured live
- 11 hops
- longest community-mesh route tested
- 0
- servers that can read your messages
System map
One network for every situation.
Pick a situation and watch a message travel. Numbers on the drawing match the numbered steps.
When the mesh can't reach
The nearest gateway box sends the sealed packet through a low-orbit satellite to a box near the other person — on another continent if needed.
- 1Your phone seals the message and hands it to your LoRa node.
- 2The mesh carries it to the nearest gateway box.
- 3The box uplinks the sealed packet to a low-orbit satellite. It can't read it.
- 4Orbit → the box nearest to them, anywhere on Earth.
- 5Their local mesh delivers it to their phone; a signed ✅ flies back.
- Paths
- BluetoothLoRa meshSatellite
- Cost
- satellite credits
- Status
- ● Works today
01 — 03
Three paths. One conversation.
Every message is sealed on your phone and opened only on theirs. The app picks the cheapest path that reaches them — and shows you which one it took.
02LoRa mesh
Across the city
A pocket LoRa node paired to your phone joins the community MeshCore mesh; messages hop node to node, no towers, no internet.
- Range
- km per hop, many hops
- Cost
- free
03Satellite
Anywhere on Earth
When the mesh can't reach, a gateway box sends the sealed message through a low-orbit satellite link.
- Range
- global
- Cost
- pay per byte, prepaid credits
Free paths first. Satellite is used only when nothing else reaches — and before it is, you see the size and the price.
Features
Built for when the network isn't there.
True end-to-end
Keys live in the phone's keychain; mesh nodes, boxes and relays carry only ciphertext — verified by tests.
Voice over satellite
Push-to-talk voice notes up to ~30 s, compressed to a few KB, delivered with proof.
Signed delivery proof
✅ means the recipient's device signed a receipt, not that a server accepted it.
Works with the community mesh
Speaks MeshCore, rides existing repeaters.
No accounts, no numbers
Add contacts by QR; identity is a key pair.
Honest path telemetry
Every message shows its path — Bluetooth, LoRa with hops and SNR, or orbit with timing.
SOS to every pathSoon
Hold to send an alert with location down all paths at once.
Pass predictionSoon
"Expected delivery ~14:20", computed offline on the phone.
Open protocol
Built on Reticulum / LXMF, not locked to one app.
Field log
Proven on hardware, in public mesh.
Every line below happened on real radios and real satellites — not in a simulator.
Voice note from iPhone through orbit — 27 s, 4 frames, signed receipt back.
SatelliteiPhone ↔ iPhone over LoRa, encrypted — text and voice both ways, SNR 11–13 dB, no boxes, no satellite.
LoRa meshFirst encrypted message from the public mesh to orbit — relays saw only ciphertext.
LoRa meshSatelliteApp on two iPhones; crypto matches the reference byte-for-byte.
BluetoothSofia → Chișinău → orbit → Sofia — 11 hops of strangers' repeaters across borders, then down via satellite.
LoRa meshSatelliteTwo unconnected meshes (Chișinău, Sofia) joined through space.
Satellite
› Earlier milestones (5)
Switched to MeshCore — 2 hops of public mesh, reached orbit in 31 s.
LoRa meshSatelliteFirst end-to-end encrypted message via satellite, box to box, proof returned.
SatelliteMulti-hop through our own repeater — hand-built antenna on a café roof.
LoRa meshFull loop: phone → LoRa → orbit → phone push notification.
LoRa meshSatelliteFirst light — "Hello from orbit."
Satellite
Roadmap
Where it's going.
01
Now
- iOS public release
- Satellite for anyone in the mesh (type @sat, see the price, send)
- Encrypted chat across the city over 1–3 community hops
02
Next
- Compact gateway (pocket node with satellite modem, no computer inside)
- SOS and pass prediction
- Android (same protocol, same keys)
- Prepaid satellite credits
03
Later
- Own nanosatellites — a network no single company or country can switch off
- Ship and aircraft tracking from the same constellation
- Multi-region relays
The box
Your mesh's window to the sky.
One gateway gives a whole neighbourhood, camp or vessel a satellite uplink; it forwards sealed packets and cannot read them.
- role
- LoRa mesh ↔ satellite gateway
- sees
- ciphertext and packet hashes only
- radios
- MeshCore LoRa + low-orbit satellite modem
- phone nodes
- off-the-shelf boards (Heltec, Seeed, LilyGO)
- power
- USB, low idle draw
- voice
- ~8 s per satellite frame, notes up to ~30 s
BluetoothLoRa mesh
Mesh & Bluetooth
free, forever
Satellite
Satellite
prepaid credits, pay per byte
Pricing at public launch
FAQ
Questions, answered.
Do I need a box or a radio?+
No for Bluetooth. City mesh needs a small LoRa node (≈ €30). Satellite needs a box somewhere in your mesh — yours, a friend's or a community one.
Is it really end-to-end?+
Yes: encrypted with the recipient's public key, signed with yours; nodes, boxes and relays can't open packets; tests check relays see ciphertext.
What can be seen in transit?+
Content is hidden; short destination addresses and packet sizes are visible on the satellite leg. Metadata hiding is planned as an optional mode.
How fast is satellite?+
Seconds to a few minutes depending on sky view and the next pass. Measured: 34 s orbit → signed receipt; ~3 min end-to-end with the modem behind glass.
How much will it cost?+
Prepaid credits, pay per byte; mesh and Bluetooth free; pricing at public launch.
Android?+
Planned; same protocol, iPhone and Android talk on every path.
Beta
Be first on the network.
The iOS beta is opening to a small group of testers — hikers, sailors, mesh enthusiasts and anyone who needs a channel that stays up.