Story PM Modi impressed with 'HIT App' used in Bihar for COVID-19 patients at home, calls for nationwide use The Prime Minister came to know about the HIT App while speaking to Patna district magistrate Chandrasekhar Singh during an interaction with officials of several districts of nine states PTI | May 20, 2021 | Updated 11:48 IST Prime Minister Narendra Modi An innovative Home Isolation Tracking (HIT) App developed by the Bihar government to monitor the condition of Covid patients recuperating at their homes has drawn special praise from Prime Minister Narendra Modi. The Prime Minister came to know about the HIT App while speaking to Patna district magistrate Chandrasekhar Singh during an interaction with officials of several districts of nine states on Tuesday.