Yes, both Insou and Slideoo offer a Free Trial.
Pricing for Insou Starts at $8/month whereas for Slideoo Starts at $6/month.
Slideoo offers several advantages, including Generates slides from text, Generates slides from PDFs, Generates slides from URLs, Real-time collaboration features, Diverse professional in-house templates and many more functionalities.
The cons of Slideoo may include a Limited free trial, No offline mode, No refund after trial, Not wide template variety. and Non-customizable templates