Longtime stutterer here. Have any of you guys ever tried out those speecheasy devices that fit in your ear?

Longtime stutterer here. Have any of you guys ever tried out those speecheasy devices that fit in your ear? I just learned about this speecheasy device. Basically, it's a tiny device that sits in your ear and plays back your voice but delayed about a fraction of a second to mimic an echo and therefore reduce stuttering. The rationale behind it is if you are at church and a crowd of people are all chanting and saying the same thing, you will find out that you do not stutter and this device replicates that. I wanted to buy it but it's expensive as fuck. Any of you try it? Or better yet, make your own? Thank you. https://www.youtube.com/watch?v=HuO3DbnQjxE