Adding analysis in free trial

I guess so. I only use google Analytics but therefor you just have to embeed some Code in your page and that's definetly possible. I would add this Code in a Navbar Slot because you need it on every page and Copying it manually isn't so nice or you can create an Code Embed Slot for Analytics but should definitely be working.

project settings is the best place for analytics stuf

make sure all script tags have defer or async attribute