Does Mac client require another purchase? Steven Chan July 19, 2017 10:04 Updated Follow Yes, we have developed the Mac client from the ground up so we think the price is reasonable. Related articles I purchased GoodNotes on my iPad and want to download it for Mac. Why do I have to pay again? How to sync GoodNotes documents between iPhone/iPad and Mac? I purchased GoodNotes 4 for iOS already, why is the App Store asking me to pay again? The Mac app crashes when I open it How do I set up the app so there is auto syncing between iPad and iPhone?