Would you use a private, offline AI for self-reflection?

I considered building an app, but I wonder how people will trust it. The target audience is the ones who are most likely to mistrust a third party.

I wonder what you use for evals and testing. I have found epistolary novels to be quite interesting to process, e.g. I used von Goethe's "The Sorrows of Young Werther" to build a demo.