Congrats! At 4% yield, that's like you've made (and invested) $150k, after tax. Before tax that'd be a yearly salary of well over $200k. If you can do 2 of those every year, you're on par with mid-level FAANG comp, once you include RSUs. There's probably a benefits and self-employment tax angle I'm leaving out though. And surely it's more volatile. But if you can keep it up it seems pretty solid.
While I like the thinking, it's not quite the same as an index returning some yield is far more likely to give returns indefinitely, whereas an app can become obsolete.
