Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
If you already have a Microsoft 365 Personal or Family subscription on your old iMac, you do not need to cancel it or purchase another subscription for your iPad Air.
Microsoft 365 is linked to your Microsoft account, not to a particular device. You can install Word, Excel, and PowerPoint on your iPad Air from the Apple App Store, then sign in using the same Microsoft account associated with your existing subscription.