I don't think, based on 20 minutes of internet research, that the job title "therapist" (with no modifiers/descriptors) is legally protected anywhere in the United States. But with the URL spelling using an 's' not a 'z', this might be targeting other countries.

But I really don't like the URL here:

1. US english would typically spell the URL as therapiZe.me . Unfortunately, that domain looks held under a different registrar from the submitted one. I assume that's a domain squatter. In word-of-mouth recommendations, this tool becomes "therapise.me with an s not a z". You lose the snappiness of common sense. (That said, if this tool is aimed at the British public or whatever, it's perfect.)

2. "Therapy" is an emotionally-loaded word for some people. You might be turning away users based on their preconceptions of therapy. (Thinking of the big online mental health players, none of them use the word "therapy" in their name. But they all seem to use the word prominently in their websites, so maybe it isn't so cursed.)