I've been using the free version, and then paid for the pro version, and it's quite wonderful. Just the right amount of features and nothing really gets in the way. I've used it to generate eBooks too, but mostly just for online writing during prompted writing group sessions. Try the free version - definitely worth a try.
I absolutely love this site, 1000x better than google drive or anythign else I have tried, I can focus and doesn't disconnect and make me end up losing my place, and having to wait for it to try to reconnect again. I have no comlaints othen than the fact it isn't an app ir available on ios or android or even download to a computer...other than that it is amazing, and even if it disconnects from wifi, it will let you keep working on your documents and then it will sync again when the connection is solid again.
Our users have written 2 comments and reviews about Big Huge Labs Writer, and it has gotten 12 likes