AirGap Vault

Offline app that turns a spare smartphone into an air-gapped crypto private-key signer.

Mobile appfree

AirGap Vault turns a spare smartphone kept permanently offline into a dedicated crypto key-signing device, generating and storing private keys in the device's secure enclave. It exchanges unsigned and signed transactions with the companion AirGap Wallet app only via QR code, so the signing device never touches a network. It has been independently audited and is aimed at crypto holders who want hardware-wallet-grade isolation without buying dedicated hardware.

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