Astropad app on Ipad Pro and app on the mac


Hi, sorry for asking a stupid question:I purchased the Astropad app on the Ipad Pro, then tried to connect with the Mac but it says I have to purchase a new app for the mac. Is that correct?
So what is the astropad app on the Ipad Pro for?
Thank you for helping me! Maya


You need the app on both the mac and the iPad. They are talking to each other when you are working on your iPad.
If you bought the app you can just download it on your mac, as long as you are using the same apple-account.