BluetoothBitBoxApp · Bitcoin / EthereumMust stay plugged in
Android
Block Bitkey:
✓
NFCBitkey app · Bitcoin
Ledger Flex:
✓
USB · BluetoothLedger Wallet · Bitcoin / Ethereum
BitBox02 Nova:
✓
USBBitBoxApp · Bitcoin / EthereumPhone needs USB OTG
Where they differ
Cryptocurrencies
Block Bitkey:Bitcoin-only
Ledger Flex:Multiple cryptocurrencies
BitBox02 Nova:Multiple cryptocurrencies
Controls / Display
Block Bitkey:Touchscreen
Ledger Flex:Touchscreen
BitBox02 Nova:Touch sensorsDisplay: Display without touch input
Wallet recovery
Block Bitkey:Phone, hardware and server keys with assisted recovery. Check service and country availability.
Ledger Flex:Recovery phrase
BitBox02 Nova:microSD backup and recovery phrase
Not fully confirmed
Operating power
Block Bitkey:Not recorded
Ledger Flex:Not recorded
BitBox02 Nova:USB power
Battery
Block Bitkey:Rechargeable
Ledger Flex:Rechargeable
BitBox02 Nova:Not recorded
Before you choose
Consider
Block BitkeyTwo of three keys are needed. Recovery involves your phone, cloud storage and the service, rather than a conventional recovery phrase.
Ledger FlexiPhone connects by Bluetooth. Android connects by USB or Bluetooth. NFC does not replace USB or Bluetooth for ordinary transactions. Cryptocurrency support depends on the app.
BitBox02 NovaOn iPhone and iPad, Bluetooth carries the data but the wallet still needs a physical power connection. You control it by touching its edges, not the screen. BitBoxApp on iPhone and iPad guides firmware updates when a compatible version is offered.
Apps and requirements
Show detailsHide details
Connectivity
Block Bitkey
iPhone · Android
Bitkey appNFCBitcoinConnection requirements
Needs an NFC phone and the Bitkey app. Setup requires a cloud backup and email alerts; recovery depends on the keys and backup access you retain.
Ledger Flex
Computer
Ledger WalletUSBBitcoin / EthereumWindows · macOS · Linux
With an iPhone, plug BitBox02 Nova into the phone or another suitable power source. It uses Bluetooth to exchange data. Ethereum needs the Multi edition; the Bitcoin-only edition cannot be changed to Multi.
Android
BitBoxAppUSBBitcoin / EthereumPhone needs USB OTGConnection requirements
Your Android phone needs USB OTG support to connect to Nova over USB. Ethereum requires the Multi edition; a Bitcoin-only device cannot be changed to Multi.
