Why are some apps only available for iOS?

There are really cool apps in this world that are available only for iOS. While Setapp has been a macOS-oriented product for many years, we have now extended our focus: we have additionally started providing apps that you can use on your iPhone/iPad only and not on your Mac. And we call such apps "iOS apps." 

You can use all iOS apps if your plan includes a subscription for iOS devices ("iOS," "Mac + iOS," "Power User," "Family," and "AI Expert" plans). 

Note: You cannot share iOS apps and read their "What's new."

See also Install and activate iOS apps.