I spent 3 years holding VAS and A200 thinking I was diversified. Turns out they share 99% of the same holdings. I was paying double fees for nothing. No tool existed that showed this in plain English for Australian investors. So I built one. ETFLens shows you what your ETFs actually own, how much they overlap, and what your fees cost in real dollars. Free to use. No ads. No fund manager payments. Built solo in Melbourne.