I exclusively pumped with both of my babies and used PumpingWork from day 1. With each baby, I tracked my pumping output with 3 or 4 apps, to see which one I liked better. I read reviews and most suggested a different app where you can input the first so many sessions before having to pay for PumpingWork , a couple friends recommended that one too, but I loved PumpingWork way more. Easy to use, great features, easy to navigate. I love that it tells you when you can stop pumping based on how much of a supply you have, you can mark whether it’s fresh, in the fridge or freezer, and easy to mark once it’s drank. And you can download all of it to an excel sheet! Seriously love it and plan on using it again with the next baby (in a couple years)!