Writer offers Free Trial, but Lightkey does not.
Lightkey is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Writer is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Lightkey Starts at $39.95/User/Month whereas for Writer Starts at $8.25/Month when Billed Yearly.
Some top alternatives to Lightkey includes ProWritingAid, Linguix, Grammarly Business, WritingAssistant, Writer, TextWizard, Ginger and Copylime.
Some top alternatives to Writer includes ProWritingAid, Linguix, WritingAssistant, WordAi, Ginger, Handywriter, Jenni and BloggerAI.