Truecaller is a free app that lets you get in touch with your friends and family without using a mobile phone. It works by tracking your location through GPS and uses it to identify your location. This means you can be contacted when you are in a different area, such as the train station, a mall, a restaurant, or any other place where you might be. This app is also useful when you are on a business trip and you want to check in on your family. It can also be used to get in touch with people who are lost, as they can use it to check in and see if they have been found. You can also use this app to find people who are near you, which is useful if you're in a restaurant and want to find out who is sitting near you.