Yes, both StoryMaster and NovelAI offer a Free Trial.
StoryMaster is designed for Large Enterprises, Medium Business and Small Business.
NovelAI is designed for Large Enterprises, Medium Business and Small Business.
The starting price of NovelAI begins at $10/Month, while pricing details for StoryMaster are unavailable.
Some top alternatives to StoryMaster includes OpenStories, Qualified, Workvivo, Tales Factory, Child Book, NovelAI and IFTTT.
Some top alternatives to NovelAI includes Texta.ai, Qualified, Workvivo and Tales Factory.