if you deposit money every month, how do you actually know if you're beating the S&P 500?

Retail brokers still only show simple or money-weighted return, which makes benchmarking against the market basically useless if you deposit every paycheck. every time I deposit my total % gain drops

to actually isolate portfolio performance from the timing of your cash flows you need time-weighted return (TWR), but it's not popular cause it's hard to calculate

for people who DCA monthly and hold individual picks or tilts: are you actually maintaining unitized accounting / TWR spreadsheets on the side, or did you just give up on benchmarking against the index?