A method for cycling GPS computations is described in which, at a beginning of a cycle, N computing devices are determined to be members of a device group. At each of N points within the cycle: a target device of the N computing devices is instructed to compute its target location data; another member of the device group is instructed to refrain from computing its other location data; target location data is received from the target device; and the target location data is transmitted to each other member of the device group.