iThoughts is probably one of the best examples of interface design with the iPhone that I’ve ever seen. It REALLY works well. I’m able to slap down ideas (thoughts), and organize them on the fly. But it doesn’t stop there… this puppy reads and writes to Dropbox! So, that opens seamless connectivity with my Mac! But not just to other MindMap software, rather OPML exporting (i.e. Scrivener, outliners, etc.) as well as PDF. iThoughts sports a variety of file export formats, and it memorizes which ones (yes, simultaneous export of multiple file formats) you want to use for each document you create! So, when I save to Dropbox, it automatically exports all of the formats that I configured with that particular iThought document! A superb productivity tool. (Also available for the iPad)