Communication during a disaster is very crucial and a very challenging domain due to the fact that the traditional communication infrastructure are very prone to go offline which prevents the people stuck in the disaster to communicate with each other and report their status to the rescue authorities which in turn causes delays to rescue operations. To enable communication between devices during a disaster and for effective and productive rescue operations, we propose an Android Application (named HelpApp) to overcome the inoperative traditional communication network where we use WiFi Direct. Android OS is used because it has 70% of the total smartphone users in the world 95.2% of the market share in India. While the primary connection is WiFi Direct, we make use of WiFi Legacy to give it adhoc-like behaviour where the network can be largely scaled up. A prototype of this application has been successfully built and tested in a controlled environment to show the capabilities. This application is published under a FOSS license and source code is available on GitHub.