My wife and I LOVE this app to which such has been incredibly helpful with regard to our son getting the right amount of milk. Simple and easy to use... and, most importantly, a benefit to your childs help. If a rock head football coach like me can use it, anyone can use it. (Baby and breast milk required.) Most of this post dictated to me by my wife who is currently feeding our boy!
SpecialTeamsCoach about Breast Milk Calculator, v3.0.1