I actually have no idea. I came to this site to see the answer hoping that other people would know, but they don't :( But I really like that this site lets other people write their opinion!
Chat with our AI personalities
No, it is free. The only thing Goodreads charges for is advertising spots, which authors can purchase if they like, but it is optional.
Yes it do cost money
It does cost money. but you can download it illegally
No. Demos for games do not cost money.
No it does not cost money unless you buy an app that costs money. If it does cost money you only have to pay for it the one time you get it from the app store.