Yes, both Depthtale and Cogniflow offer a Free Trial.
Pricing for Depthtale Starts at $1.99/month whereas for Cogniflow Starts at $15/month.
Depthtale offers several advantages, including Interactive and collaborative storytelling, Unique narrative paths, System for saving stories, Story sharing via unique URLs, Backstory navigation and many more functionalities.
The cons of Depthtale may include a No offline mode, Requires community engagement, Dependent on Internet connectivity, Long load times for paths. and No option for private stories
