I use to purchase a long string/list of numbers way back then,
no heads nor tail/use 4D almanac chinese book as guide too - just blindly try my luck.
Have strike some but not enough to cover loss.

Then got deeper into it, bought and tried softwares that try "forecast"
Also buy long list - got hit some good ones but sadly not enough to cover years of those lost.

Then did pick up the excel from first post 6D analyzer and tweak it for 4D nombor ramalan.

To answer your question whether it helped spot a winning number from my side is - "yes" but
not constant enough "yet". Not enough to pay salary monthly or pay a year salary in one winning

But it does save me from buying a long list of number thus wasting my resources (hard earned money). 

I target some numbers which may be of interest. I am trying learn from it.
It's an on going process.

It has help in a sense, if it don't feel that good i spend less.