It tooks quite long before Google finally made Blogger app available for iOS. I used to create post using BlogPress app but I noticed that this app left many hidden draft files on iOS after saving/publishing post. And there's no way I can delete those files except by connecting my iOS device to iTunes.
So from now on I will probably just using this Blogger app. Here's some of app screen shots.
Update:
Meh... this Blogger app won't let you to manually arrange the position of the image in your post. All images are stacked at the bottom of your post. Should I switch back to BlogPress again? Fail google, I hope they improve this app soon.