Can I have a nickchain for free (off-chain) ?
Yes, the nickchain project is meant to serve everyone by becoming the main blockchain Id provider.
But being off-chain means that you can't access all on-chain features like using NFTs as profile pictures, map your contacts networks over the blockchain, sign content, verify your social networks, etc.
We defininetly encorage you to get your nickchain to unleash all the project potential.
More info