In recent years smartphone has become most important gadget for maintaining the daily activities and it also used by maximum population worldwide. Use of smart mapping technology is also increasing in the large area like transportations, defense, sports, etc. Mapping applications always depend upon current detection or preferred location of a user or the group. Sharing location among the group is the better solution to know the individual's location. Considering the condition any group wants to arrange a meeting at the location which suits all the members hence it will always better to find the centroid of the polygon generated by user geo-locations. The proposed system aimed at finding the preferred and central location for user group using geo-point calculation and mapping technologies. The proposed system will provide a location-based service. This system will provide the central location or the location which is nearer to all users by using great circle algorithm and users location will be determined by using Google map API and GSM. Location privacy is the ability to prevent other parties from learning one’s current or past location.