I bought the fluency pod a few months back and my honest reflection is as follows: - it helps my fluency a lot. I already had been using DAF apps for work presentations for years so I knew DAF worked for my stutter. Even though they gave a money back guarantee u should try a DAF app for free or cheap before. It takes little to no time - the earpiece is not invisible, but small enough (I know they do not claim for it to be invisible). You can see it when you are up close. Because it is a hearing aid shell I never really get asked by people ‘why are you wearing a earbud while you are taking to me’. That was the main thing I was concerned about before buying it