Planning a long article or book demands a logical structure and discipline to avoid repetition and to enable focus section by section. Some writers delve straight into Word or Pages and indulge in one splurge of random thoughts; others use outlining tools or applications such as Evernote for organising thoughts and research before beginning writing.
IndexCard from DenVog is a new iOS application that works as a stand-alone outliner, card index and text editor. Its party trick is the ability to sync with a Scrivener file on the Mac. It is the almost perfect iOS complement to Scrivener.