If you play war games, you need to know all your units' stats. In the biggest war games, that means using book or apps to keep track of it all. That means flipping through pages or flicking through screens all to just know which dice you want to roll and what you need to succeed. To us, that's not the fun part of the game.
To us, playing the game, rolling the dice, moving the units, out-thinking your opponent, and having more time with eyes on the battlefield than in a rulebook is the most fun.
So... we did something to help do that. The have more fun, thing, that is.