That was the killer feature for me. Being able to yell "Alexa, put milk on the list" right as I poured out the last drop was very convenient. For larger lists like recipe ingredients I used the web interface. I still use it via the Windows app (which insists on grouping my items even though I keep turning it off) and my phone, but the experience and interface has gotten worse over time. I wonder if I can get similar functionality from Google.