core + attic (Attic Area): these terms have been either deprecated from the core or extentions, or removed from pending as not accepted into the full vocabulary.

installUrl

Canonical URL: http://schema.org/installUrl

Thing > Property > installUrl

URL at which the app may be installed, if different from the URL of the item.

Usage: Between 100 and 1000 domains
Values expected to be one of these types
URL
Used on these types
SoftwareApplication

Schema Version 3.4