Pocket Lists is an amazing universal iPhone + iPad to-do list app for managing all kinds of to-do lists, focusing on important to-dos, and for sharing to-do lists with friends. Robust, feature-rich, and very easy to use.
This video features Pocket Lists version 3.0 (designed for iOS 6). A newer version for iOS 7 is available: pocketlistsapp.com
Download on the App Store: itunes.apple.com/us/app/pocket-lists-to-do-list-reminders/id482537116?mt=8&ign-mpt=uo%3D4