Mind Node Pro

Just search for Mind Map in the App Store and you're going to see a bunch of them. You want something that uses a standard data format so that these mind maps that you can create on one version of the software or on your iPad or iOS device is going to be compatible with the Mac version. If it doesn't have OPML, that's a non-starter. But otherwise... And I would frankly recommend Mind Node Pro if you want to just try one because the developer of Mind Node Pro has been working on this app for many years, even before the Mac App Store.