Is Things a single purchase for all devices?
– No. Things for Mac, Things for iPhone, and Things for iPad are sold separately
I have more than 1 Mac/iPhone/iPad. Do I have to buy Things multiple times?
– No. You can install the app without additional cost on all devices of the same kind
Are there discounts?
– No, Apple’s App Store doesn’t offer discount options for apps which are sold as an up-front one-time purchase.