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If such a program can be used not only by a small circle of enthusiasts but by everyone who wants to, I don't see any reason to ban it. Moreover, I don't see any reason to ban the map editor. It contains the same information as tables on demonology, movement points, etc.
If the program draws data from the online game and provides data on the hero you need, then it is, of course, cheating!
But if there is already a database of options, and you find yours in it and understand how the development of skills will proceed, then this is certainly not cheating.