iCareU is the bundle APP with eNAVI personal tracker device. The eNAVI personal tracker provides GPS or CellID location fixing and many powerful funtions like SOS emergency alert, GEO fence, instance calling …. iCareU APP helps user to control the eNAVI tracker and shows the location or track of the tracker on elegant rendering off-line map. The map data is stored in the phone instead of web server to support rapid responce and avoid extra network fee. We support global map coverage with OSM(OpenStreetMap) GIS data.