Ah, Tinder for introverts? I have used SurveyMonkey before and I am using it now to test an online/on demand PR course that I am filming. Yes, it is a great idea to test with SurveyMonkey and it is a very easy site to use. You can add the link to your survey on all social media and in an email. I would start by emailing all of your contacts. However you may want to consider giving your testers something to try. Have you developed a prototype?
I also recommend finding out what people think about your idea via meetups and events and by creating an opt-in page. Let me know if you need any help.