This tutorial explains how to create torch flashlight application in react native application. Flashlight is a important part of every mobile phone in current arena. It comes build in with each multimedia smartphone that comes with camera. Flashlight is basically used as camera flash in mobile phones but it can be also used as individual flashlight at night. In react naive there is no direct build in component available to control the flashlight manually but using the react-native-torch NPM library we can easily control both android and iOS mobile phones flashlight and make them turn on and off.