Netflix came out first. - Netflix was founded in 1997 (launched as a DVD-by-mail rental service) and began its streaming service in 2007 in the United States. - Pure Flix (originally called PureFlix.com) launched its streaming service much later, in 2015 (officially announced and rolled out as a faith-and-family-focused alternative to Netflix). So Netflix is older by about 18 years (as a company) and 8 years (as a streaming platform).
Seek & You Shall Find