According to the Google Mobile Blog, Google has finally released an official iOS app for their popular Blogger service. The app can be used to write posts, and either publish them or save them as drafts from your iOS device.
You can also open and edit existing drafts and posts on the go from your iOS device, and since the posts are hosted by Google, all of your blog posts are synced and available on all of your devices at once.
The official Blogger app is available today for free through the iTunes App Store (Free, App Store Link)