Mobile app Free trial or Freemium

Hi everyone,

I was thinking about the monetisation in a mobile and especially between free trial and freemium, I ask to my girlfriend what she prefer in an app, her answer was that she prefers be able to test the entire app before engage any money and from a founder point of view in a freemium model users can costs more money than paying users.

What's your thought, pros and cons or feedbacks?