[Zubersoft]

You can run MobileSheets on MacOS if your Mac has an M1 or M2 processor. You can open the Apple App Store, search for MobileSheets, and if you've already purchased it, you won't have to pay again. However, the app store will act like it's going to charge you again - you have to go through the steps of purchasing, and then it will say, "This update is free" and just give it to you. I've contacted Apple about this, so hopefully it's something they will fix at some point. Once you have the app on your Mac, you can set up the library on that device and sync to your iPad if you prefer to work on the Mac. I can provide more information on this if needed.

If your Mac has an Intel processor, you won't be able to run MobileSheets unfortunately. 

Mike