Can somebody explain what the difference between this and IPFS is? I see block chain mentioned so I assume you pay for storage but that page just allows you to

Can somebody explain what the difference between this and IPFS is? I see block chain mentioned so I assume you pay for storage but that page just allows you to upload anything right away without payment. Is this actually an alternative to FileCoin? https://ipfs.io https://ipfs.io https://filecoin.io https://filecoin.io