Gaming calculators

[Addie]

On one of the online casinos I've started playing at they offer game calculators. I've never used one of these before, but they seem to be available for every type of game out there. Has anyone ever used one of these? What do they do exactly?

 

[maxspencer90]

I have never used these calculators before as but from what I have heard, they are used to get the best calculations so as to know the house edge in each game and also to get the best play for each situation. Do these really work especially because it is quite hard to beat the house?