iOS Pick: Google Keep
Megan Morrone's app cap from iOS Today 271 is Google Keep. This is a note taking app that can handle simple notes, to-do lists, drawings, photos, audio, and more. It also integrates with Google Docs, so you can easily move information from Keep to Docs.
Another benefit to Google Keep is that it works on the web and on both iOS and Android, so you can share lists with users of either platform. Google Keep is location aware, so you can set it to only show you your grocery list when you're near the store.