Self-custody that's
actually safe.
Your keys are generated and encrypted on your device — Lumen literally cannot touch your funds. And every transaction is simulated before you ever sign.
Keys only you hold
Your seed is generated on-device and secured by your phone's secure enclave. It is never uploaded — not to us, not to anyone.
Transaction simulation
See exactly what a transaction will do — balances in and out — before you approve it. Risky approvals are flagged automatically.
Audited & open
Core cryptography is signed off by Trail of Bits, and the client is open source — so anyone can verify what runs on their device.
Hardware ready
Pair a Ledger or Trezor for cold-storage peace of mind, with the same clean Lumen interface on top.
Biometric unlock
Face or fingerprint to open, signing confirmations for anything that moves funds — phishing-resistant by design.
Encrypted backup
Optional encrypted recovery to your own cloud or a hardware key — you choose, and you alone can decrypt it.
We can't touch your funds — by design.
- ✓On-device generationYour seed phrase is created and encrypted on your phone, inside the secure enclave.
- ✓Local signingEvery transaction is signed on-device. Lumen's servers never see your keys.
- ✓Your recovery, your controlBack up to your own cloud or hardware. Lose your phone, keep your coins.
Own your keys.
Self-custody without the seed-phrase anxiety. Download Lumen and hold your coins, safely.
Get the app