My family uses a custom Todo list on home assistant. I’ve got a separate dashboard of items we can just click to add to the grocery list, and then when shopping, checking them will move them out of the way. Very convenient, quick, and shared. So if you use HA, it might be good option, especially since you’re wanting something simpler (I was in the same boat)
Hmm that’s actually something I hadn’t thought about, but yeah it probably wouldn’t work for an offline mode… If the app is already open, maybe it would work, but I’m not 100% sure. In general, it does require internet to connect to your home assistant (my phone is setup with wireguard to VPN into mind so it’s not internet facing). So yeah unless it can be used during those random connection drops, maybe not a perfect option :(