Graflr is not a crypto wallet.
Graflr does not store cryptocurrency private keys.
Graflr does not require access to your crypto private keys.
Graflr leverages the WalletConnect protocol to securely ask your crypto wallet which address and blockchain you would like to receive the NFT.
Graflr does not require/request any cryptocurrency or gas fees to do its thing.
For more information on supported wallets see the following article: