IR Remote Tester: Infrared RC is a handy application that allows you to check if your remote control is working or not. If it is, then you don’t need to buy a new one, you can simply use this app to check if your old remote is still working or not. 

IR Remote Tester: Infrared RC is a free application that allows you to use your smartphone’s camera to detect the infrared light, which is otherwise invisible to the human eye. The app works as a filter to convert the image data into a visual form that can be seen on the smartphone’s screen.