KioskBuddy works with any iPad that can run iOS 16.6 or higher. This includes the base iPad models, the iPad Air models, plus the larger higher quality versions like the iPad Pro models as well as the smaller iPad Mini models. For more information on iOS 16+ devices, see this article from Wikipedia.
If you already have KioskBuddy installed on an older device running iOS 16.5 and below, KioskBuddy v4.0.4 is the last supported version.