Damage calculator.

Back then, having a piece of paper and a pen also simplified the process. Having a brain that can calculate or at least estimate such things also simplifies it. I suggest banning all of this and playing exclusively with dice: whatever number comes up, that's how you move.

In this case, we are talking about replacing the brain with a program, which affects the intellectual aspect of the game (i.e., increases/gives a "fool" a chance to win in a "battle of wits"). My recommendation to ban programs is proposed solely for the regulations of offline tournaments in the CIS.
Similarly, no one would allow players to use a hold'em manager during offline poker tournaments.