Scientists in US at National Geophysical Data Centre, Boulder which is considered to be affiliated to the National Oceanography and Atmospheric Administration have recently arrived with an incredible way to crowd source the available geomagnetic data purposefully for their finest project to map world's magnetic field. They have come up with an application called CrowdMag which can be downloaded from Play Store on your android phones. Enabling background reporting on this app results in transmission of the vector magnetic data at specified time intervals. Accumulating this data and comparing it with the real-time solar wind data, the scientists have succeeded in creating a perfect model of Earth`s magnetic field. According to the scientists combining satellite and air-borne surveys you can achieve only a certain level of accuracy in resolution and the best model is considered to have an accuracy of approx 28 kilometers. Particularly for recognizing and diminishing the adverse effects of local sources of magnetic field in a device like transformer this contribution can have a great role to put into application which further cannot be collaborated in the satellite data. Although there are many shortcomings with the GPS since it does not provide a pointing direction as such in the stationery device and also the signals transmitting through the satellite can be stuck or they can be excavated. Taking into consideration are the privacy issues, if the send data option is selected on the phone then it accordingly transfers the information regarding the measurement of time, its location, location accuracy and surprisingly the magnetic data from phone's sensor which is thereby a necessity due to availability of various sensors. If the statistics are to be believed then around 2000 people are using the app and the maximum number of users is estimated to be from France. Highest number of users for a city is from Denver metropolitan. This app can be easily accessed from google play store or from iTunes.