Story Planner is an excellent application for Mac and ioS that helps with plotting and world building your novel. It has a lot of tools and customization from Characters, Locations, Plots, and Scenes. It syncs beautifully between devices through iCloud to use on Mac and iPads, as well as iPhone it says, though I do not have one to test. There is also an option to export into a beautifully formatted Microsoft Word Document or into Scrivener as well.
Visit https://storyplanner.app to find out more about the application.
Visit https://storyplanner.app to find out more about the application.