I would like to purchase the perpetual version of Acrobat Pro DC, but I will be using it mainly for an Ipad. Will the perpetual version work for the Ipad, or will I need to purchase the subscription version?
Sorry, but Acrobat DC Pro currently only runs on Windows and MacOS.
For iOS (both iPad and iPhone), Adobe has the free Adobe Acrobat Reader product. If you already have a subscription to the Adobe Document Cloud or Creative Cloud, you already have access to some extended web services based off of the Adobe Acrobat Reader for iOS. You can also purchase subscriptions to extend the functionality of just that iOS product.
However, even with the extended web services, you certainly will not have anywhere near the functionality of Acrobat DC Pro on either Windows or MacOS.