You are totally right there. There's no cure yet, so people cannot think about making apps that cure stuttering. I don't think an individual app will fix anything . I would say that access needs to be fixed and efficiency needs to improve. I was lucky enough to have access to specialised therapy but most of the people don't. Technology can come from there and it should be definitely a complement to speech therapy, not a replacement, to increase scalability. If you want to tackle this I would pick up accessibility through process improvement and efficiency. Therapy cycles are too long which makes it very expensive, in person therapy is only available in few countries and cities and even remote therapy is scalable geographically but not in supply available. So follow up questions: What tool can you build that can release sometime from therapists hands to see more patients? How can we shorten therapy cycles, by making support scale beyond therapy walls?