Insou offers Free Trial, but Instant does not.
The starting price of Insou begins at $8/month, while pricing details for Instant are unavailable.
Instant offers several advantages, including Integrates with Google Slides, User-friendly interface, Professional-grade slide templates, Customizable slide styles, Ability to select presentation length and many more functionalities.
The cons of Instant may include a Limited to Google Slides, Subscription can be expensive, Restricted slide generation on Pro plan, No support for custom templates on Free version. and No chat/email support for Free version