I actively use two calculators, but before that, I was quite good at calculating the results and everything else. I think that all these programs are wrong. Analogy: you're not allowed to use a calculator during a math exam; it's the same analogy here – battles are part of the game, damage is part of the game, so the player should calculate it, not a program. Just like in math, simple tasks are part of complex ones. Although, if battles and value aren't part of Heroes, then programs can be used.
I suggest we organize a flash mob and stop using programs (it will be very difficult for me now without them)?

Off-topic: The other day, I had a game where I killed 47 pegasuses for Pandora. I knew that 10k value (10k experience) is enough for up to 45 pegasuses. I understood that there were about 12,500 value points, and that it was likely the entire 4th level and all the skills or monsters, but not experience or gold. The game wasn't a tournament, and after getting Pandora without wisdom, I realized that it was the entire 4th level.