Argent works across multiple blockchain networks: Ethereum, zkSync Lite (deprecated), and Starknet.
When you make a transaction, such as a transfer, you will sometimes see the network you are sending from and the network you are sending to.
For example, "Ethereum → Starknet" means you are sending from your Ethereum account to an address on Starknet, and the funds will be received on the Starknet account.
You can also view this information in the detailed view of your Activity log by tapping on a transaction.
Please note that network fees can vary between networks, and transfers across different networks may take longer than expected.