Hi
@meric, I was in the same position as you, specialised excel tool build and wondering whether I should get a dev to help build this into an online platform for others to use. A bit of a market scan revealed these guys, who substantially do what you (and I) are contemplating:
https://www.sharesight.com/au/
So if you were to do it, a 100% free to the user version may give an edge over Sharesight (generate revenue from ad sales and affiliate revenue channels). Otherwise you will need to have some form of amazing differentiated product or face directly competing head to head with them.
