Ask HN: What simple tools or products made you loads of money? Posted by xcoding on Thursday November 17, 2016 @12:23PM from the ask-hn dept. I am planing to build a simple tool to make money. ( 9 comments | 13 points | on HN )
I think this is technologically almost impossible to build right though... probably would involve some degree of general intelligence.
Vanguard's S&P 500 fund. Buy as much as you possibly can and never sell it.