Above: A screen from Salesforce's Journey Builder for AppsImage Credit: SalesforceMobile is computing’s new center of gravity, and apps are the core of mobile. To help marketers direct their efforts toward this critical part of digital experience, Salesforce is releasing its “Journey Builder for Apps” today. In July, Salesforce launched its Journey Builder for creating unified customer experiences across a variety of channels, including the Web, social, email, apps, and so forth.