Eagle480, did you ever find a spreadsheet or app? I'm after the same thing. I've tried some apps that now claim to calculate a nassau bet, but they are way too complicated. I am searching for something simple where you enter the player/team net score vs. another player/team net score. We play multiple balls usually on the team nassau and it takes a while to call a $2/$2/$2 bet. Plus, after a couple of beers, we're not always trustworthy of the callers nassau calculation skills. A simple app would help a bunch.