Elements is one of many text editors available in the App Store. It supports Dropbox, Markdown and TextExpander which makes it popular among iOS users. It's available for the iPhone, iPod touch and the iPad, but the iPad version really shines as a text editor. Version 2 was just released and adds several notable features for editing and exporting documents.
The iPad version uses the entire screen and the large onscreen keyboard, which makes it easy to create a text document or markdown file from scratch or edit an existing one on the fly. I don't have a Bluetooth keyboard and was unable to test this functionality in the latest version of the app.
All documents can be uploaded to your Dropbox account and synced across devices. E
