Neither Write.as nor Spaces offers a free trial.
Write.as is designed for and undefined.
Spaces is designed for Individuals, Medium Business and Small Business.
Pricing for Write.as Starts at $6/Month when Billed Yearly whereas for Spaces Starts at $1.49/Month.
Some top alternatives to Write.as includes Letterpad, WriteNext, Qualified, Docswrite, Workvivo, WriteTomorrow, Novlr, Write Invisible, Spaces, Writeby, Write.md and Mindwave.
Some top alternatives to Spaces includes Sassbook, Qualified, Workvivo, Bloggi, Write.as, gSweets, Quill.app, Slick, Scrilys, Writeby, Write.md and IFTTT.