Info: You will have to authenticate yourself-either using your MacBook’s TouchID fingerprint sensor or your Apple ID password-if this is your first time downloading the app and see the “Get” button. If the iPhone or iPad app developer elected to have their mobile app available on Mac, you will now see it on the results page.
Click on the “iPhone & iPad Apps” listing to switch views. You won’t immediately see the app you’re looking for-this is because the App Store defaults to only showing Mac apps. You can now enter the iPhone or iPad app’s name into the search bar found in the top-left corner of the window.