Cash Pirate and trialpay privacy concerns?

I was on cashpirate and was doing a offer which required me to make an account on swagbucks. (The offer was powered by trial pay and the app was cashpirate) Then when i clicked on the offer it redirected me to but it wasnt on chrome or something, it was in THE APP. Then after i realized that i became paranoid. What if they found my password and go on my things and stuff. Is cash pirate trustworthy for keeping your privacy? Or trialpay?