Ever find yourself out and near the grocery store but without your grocery list? I have and I do not want another app on my phone to maintain. They are useless because Pamela and I both need a copy of the list.
Simple solution: we share our iCal calendars on our computers and phone, so we know each others schedule and can plan events together. We create a event for the 1st day of the next month titled "grocery list" and add grocery items into the notes area. Now whoever is in town and near the grocery store always has an updated grocery list on their phone. Simple and easy to maintain. We just move it to the first of the next month at the end of each month.