Strike transaction fee
Strike does not charge transaction fees to users for its services.
On-chain fees are fees paid to miners to support and secure the transactions on the Bitcoin network. For these transactions, Strike passes the miner fee on to users.
Lightning network fees
Lightning network fees cost a few cents per transaction at most, and often less. For this reason, you may want to use Lightning to carry out transactions where possible. For Lightning transactions, Strike passes on Lightning fees to users.