Hi,

i wrote a js multiprocess calculator for martingale, where you can test your strategies.
It's not yet documente well, but you can try with.. and finally understand that you need to risk a big capital to win.

strategy=1, (0 1 or 2)
min_losses=1 (if you put 4, it will wait 4 losses in a raw before to play martingale),
tot rolls at 1 million, 
then set odds/increase as you like (there is another calculator on the website to find the minimum incr to martingale on different odds)
cunk size put at max 20000, it's the size of the chunk executed by a single process...

https://www.bitso.me/hi-lo-calc.php

hope you enjoy