Hi Kenneth,
iWork for iOS doesn't exist as a package, so for the iPad you bought one or more of the three iWork applications: Pages for iOS, Numbers for iOS and Keynote for iOS,
These are available only from the app store, and you are licensed to install them on any supported device attached to the same Apple ID app store account. iOS applications require iOS, the operating system used on iPhone, iPad and iPod devices. iOS does not run on the MBP or the Mini, so these are not 'supported devices'.
iWork '09 could have been purchased as a boxed retail product, supplied on an installer disk, or as a downloaded thirty day trial, later converted the the 'full' product by purchasing and applying a licence registration number. These packages include the Mac OS X versions of all three iWork applications, and would have been purchased under either a single-user, single-machine licence (allowing installation and use by only a single user on a single machine—the licence allows for transfer to a different machine or to a different user, or both, but not for conccurrent installation on more than one machine or concurrent use by more than one user), or unde a Family licence (allowing installation and use on up to five Macs, all owned by members of the same family, living under the same roof).
Or the individual iWork (Mac) applications could have been purchased from the Mac app store under a licence similar to that for the iOS versions.
Bottom line:
- You needed to make separate purchases for Pages for iOS and Pages (Mac) because they are different applications and run on different platforms. (If you were using MS Word, for example, as your word processing application, you would need to, for the same reason, purchase separate versions to use on your Windows PC and on your Mac.)
- You do not need to purchase separate copies of Pages for the MBP and the Mini IF your original purchase (of iWork) included the Family licence; or if your original purchase (of Pages (Mac) ) was through the Mac app store, AND both the MBP and the Mini are registered to you under the same Apple ID Mac app store account.
The complexity of the Mac licencing arises from the changing model of software sales. Early purchasers of iWork '09 (eg. me) had only the choice of a single user or a family licence. Current purchasers can choose to buy only the applications they need from the set, or all three (for a lower price than the full iWork package under a single user licence), and automatically get the less-restrictive licence.
Regards,
Barry