After a stroke or an accident, the brain is damaged, and many people affected are literally speechless. Due to their sudden loss of speech, they suddenly may not be able to practice their profession and become socially isolated. Therapists help them regain the ability to talk. Often, however, the hours prescribed are not enough. A social start-up has developed "neolexon," a speech therapy app that enable patients to continue to practice alone anywhere and at any time - free of charge and tailored to their individual needs.