You're better off making a post asking about it. I have a few minutes of experience with DAF. My speech pathologist used it as a tool to demonstrate my ability to be fluent. Not as a tool to achieve fluency. There is a [recent post](https://www.reddit.com/r/Stutter/comments/13zs73v/should_i_continue_with_daf_app/) in this sub about a DAF app. Make sure you read the comment by u/freakyoudude in that post.