Moreover, poker players in the Vietnam gambling community act more efficiently by applying support tools like poker calculator. The poker calculator app becomes their favorite and makes calculation faster and more accurate when considering to win a poker game. Nowadays, gamblers do not have to count cards or rely on their experience, it can use the poker calculator app to support the decision-making process. Besides, the poker calculator app will help analyze strategies when logging results can deliver alerts data, and improve poker skills. Along with technology development those previous years, poker calculator apps support easy access to poker players in Vietnam. Poker calculator is not only beneficial in a strategic aspect, but the ability to conveniently control the appearance in every big and small match. Therefore, poker calculator apps are essential tools to support the battle on the next poker match of the Vietnam player.