From The Omni Group:
If you've been using OmniFocus 2 for iPhone, you can use Complete My Bundle with the OmniFocus Legacy Support Bundle to get access on your iPad and Apple Watch and get full credit for your investment. OmniFocus for iOS brings the in-depth task management features of a desktop app to your fingertips. With flexible viewing options, location awareness, and on-the-fly task entry from just about anywhere, OmniFocus is the trusted system you need for managing everything in your busy life. Keep track of tasks by project, place, person, or datewith OmniFocus youll always have your important information at hand. Whether its a shopping list, agenda items to discuss at work, or chores to do at home, whatever you need to do is right there on your iPhone or iPad.OmniFocus' interface was designed from scratch for iOS and organized around your datayour stuffto make it easier and more natural for you to quickly get ideas into and out of the app, whether youre using Getting Things Done (GTD) or any other productivity system. It's powerful enough to use on its own, and syncs through the cloud with your other devices running OmniFocus (also available for Mac). Syncs even happen when youre not actively using OmniFocus, so that your information is ready when you are.FEATURES Reliable sync with NEW push triggering using our free service or your own server A flexible hierarchy: keep all your to-dos in one list or use as many levels of Folders, Projects, Groups, and Actions as you need to stay organized Assign contexts based on location, people, energy levelwhatever you need to get the task accomplished Plan your days errands by listing nearby location-based contexts or viewing them on a map Sharing Extension captures content from any app that has a Share button Today Extension shows you OmniFocus items due today right in Notification Center Reminders Capture and OmniFocus Mail Drop for entering OmniFocus actions via Siri or email Interactive notifications for nearby and due items let you mark complete (or snooze) without even opening the app Search shows results from the current view or your entire OmniFocus database Add Photo and Audio attachments right on your device and view file attachments synced from other devices Forecast row shows you how much is due in the next few days on your homescreen or sidebar; open the Forecast perspective to see your due items alongside events from your iOS Calendar NEW on iPhone, a dedicated Review perspective makes sure nothing falls through the cracks (Review has been on iPad since the beginning).