I think some advanced casino gamblers may use betting calculators or other mathematical models to calculate their optimal bet size, depending on factors such as the odds, expected value, and house edge of a particular game. However, this is not as common as in sports betting, where the use of analytics and data-driven decision-making is more widespread. Ultimately, the use of betting calculators or other tools depends on the individual gambler's preferences, strategies, risk tolerance, and available resources.