No.  It is just a website.  If you want further privacy, use it through Tor with no JavaScript.  Links to the website can be found on this thread under LoyceV's posts.

You need a lot of coin management education in order to keep your privacy levels up once you mix your coins.  Does anyone here have some sort of documentation on that?  Wasabi used to have a great doc, but I can not recommend them anymore due to them turning to the enemy boat.

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Regards,
PrivacyG