Evernote for iOS is just one part of an excellent, access-from-anywhere note-taking system. The latest version of the app has a completely redesigned user interface, with better access to all your notebooks, tags, places, and everything else you've come to rely on in Evernote.
There are many ways to create notes and the collections of notes called notebooks. Your notes can be text, images, or Web clippings, but a premium account (with a monthly subscription) will let you save other file types, too.
In addition to using Evernote on your iOS device, you can also create and get to your notes from a variety of mobile devices (including an app for Android that did not receive the UI update) and any Web browser on any computer. A free Evernote account links all your notes together.