You always want to mitigate risk, for you and for investors, or partners. One of the easiest ways is creating fake landing pages of your product idea. You then run ads, fb or Google, and see if people 'convert'. Convert can be giving their email, clicking a button like buy now, faking all the way to checkout, whatever you think proves there is a market and need for a solution of your product.

There are many other ways to test a product without building. I would suggest you pick up the book Lean Startup by Eric Ries, as he is the founder and master of the MVP, minimum viable product. If you have any questions, feel free to reach out as I was in a similar situation with my venture and in the EdTech space.