Trimble Catalyst is a GNSS receiver service for Android that delivers high precision GNSS using a small, lightweight antenna that plugs directly into an Android phone or tablet’s USB port. Once connected to any Catalyst-ready or third party location-enabled app, it delivers high accuracy positioning with an on-demand subscription service. Catalyst On Demand is a new purchase model for Trimble Catalyst and is now available with a by-the-hour service model.