I use a wide range of apps in my work. From Apple apps that are included with the operating systems I use – Mail, Messages, Pages, Numbers, etc. – to third-party productivity apps, as well as apps across many categories. In addition, as a journalist and reviewer, I test many apps. So I have a very good understanding of the different ways apps are marketed and sold.
One company stands out for its odd structure of features and pricing: The OmniGroup. At some point – I don’t recall exactly when – they made the decision to offer two versions of many of their apps. On the Mac, for OmniFocus, there is a Standard version ($50) and a Pro version ($100); for OmnOutliner, there is an Essentials version ($20) and a Pro version ($100); and for OmniGraffle, there is a Standard version ($150) and a Pro version ($250). (iOS pricing is $50; $75 for OmniFocus and $20 and $50 for OmniOutliner; and $60 and $120 for OmniGraffle.)
I’m a long-time user of the first two apps. I bought OmniFocus when it was first released, and used it extensively at the time, because I was involved in managing some fairly complex writing projects. For many years, I didn’t need it, but I have recently started using it again to organize the tasks I need to do for my work. And bought I OmniOutliner many years ago – perhaps not when the first version was released – and have used it to outline all my books since then. I don’t use OmniOutliner for anything else, but I’ve written enough books that I want a powerful outliner to help me in the planning stage.