5.6 I would like to use data from my FactSage databases with ChemApp. Does ChemApp require direct access to the FactSage databases, i.e. does it have to be installed on the same machine?

No, ChemApp need not and cannot directly access any FactSage database. Thermochemical data from FactSage databases is made available to ChemApp (and ChemSheet, for that matter; i.e. any software that internally contains ChemApp) via ChemSage-style data-files, which are user-defined subsets of the databases available for FactSage. See section 7.7 for more information. For general information on data-files, see section 7.1, section 7.2, and section 7.3.