I like the idea, however I don't like that there's no transparency. Where's the privacy policy, what are you using my data for? Why is this free? Where's an exa

I like the idea, however I don't like that there's no transparency. Where's the privacy policy, what are you using my data for? Why is this free? Where's an example of how this works before I give you my info? Why should devs give up their time (as others mentioned), with examples.