Er. Satish Lokhande, Sr. Technical officer at CSIR-National Environmental Engineering Research Institute (NEERI), Nagpur, have developed a unique Noise App named "Noise Tracker" to measure the real-time noise level using android smartphones. It has been launched with the hands of Hon'ble Mayor, Nagpur Municipal corporation, Smt. Nanda Jichkar on the occasion of 77th CSIR foundation day Function held at NEERI on 26 September 2019. It is free available to download on Google Play Store.