Bitrefill is compatible with any wallet.
To benefit from instant and fee-free transactions, especially if you are a regular customer, consider topping up your Bitrefill balance. Keep in mind that Bitrefill balance is not a wallet, it is prepaid store credit, that you can only use at Bitrefill, but this option can help save on fees and waiting time for frequent purchases.
Learn about topping up your Bitrefill balance HERE