Wail is completely anonymous. Nothing identifying is required, only a made-up username, password, age, and gender. Other information which is optional is also non-identifying--marital status, occupation, race. We hope you share this information so that WAIL can further its mission to prove none of us are alone in our problems.
We use the same platforms as large apps like Uber, which handle much more sensitive information than we do. These are very secure and very private platforms. So, even though no identifying information is stored, what information is collected is very secure.
As far as the community within the app, you control who can comment on your posts, or if you even want comments on your post. And if for some reason you do receive a comment from an unempathetic person, you can remove it immediately.