The only real validation is people buying your product. That’s why you need to ship something super fast.
You don’t need the product yet, not even an MVP. Create a landing page with Carrd
and describe the solution you want to make.
If you can add some mockups, screenshots, or make a demo video it’s even better.
And ask people to preorder your product.
If the pain you’re trying to solve is big enough, they will be super happy to pay upfront - give them a huge discount or lifetime access.
Gumroad stopped the preorders, but you can still do it easily with Flurly