Do I need a separate purchase for iPad, iPhone and Mac?
The app is universal for iPad and iPhone, but not for Mac. If you want Story Planner on all your devices, you will have to purchase it separately for iOS and macOS.
Current App Store bundling options are limited, meaning that offering a one-cost solution is outside of our reach at this time. The iOS App Store and the Mac App Store are different platforms, they require independent development for each version of the app, as well as maintenance and support. This is why our users have to purchase the app for Mac with a different price. We hope you understand.