I've visited the website and I get the explanation about this app. Really helpful app for training brain people with some diseases like Alzheimer, stroke, dementia etc. An alternative for therapy. Because for 100% recovery it's a small possibility. More precisely to keep the brain functioning properly. Through therapeutic understanding of language also cognitive approaches through specific training.

Whether therapy through this app can be done by themselves or requires a competent companion in their field, I am not get directly information from the website.