Licensed for Developer Use Only

I refer to the Android ArcGis_Demo project. It says “Licensed for Developer Use Only”…

Which is Licensed for Developer Use only? It refers to the to map services?
http://mapservices.onemap.sg/mapproxy/wmts/1.0.0/WMTSCapabilities.xml

Thanks

K I think I understand it now. ArcGis is a commercial product.