There are transaction fees, but you will not have to pay them during Soft Launch. Every time a transaction occurs on the Matic Network or the Ethereum network (the underlying technologies that Skyweaver uses), a transaction fee, called a “gas fee”, is paid to help power the Matic Network.
Horizon currently pays for these gas fees. In the future, you may be responsible for paying transactions fees, but we’ll let you know if and when that happens.