WhatsRadar is a free Android app developed by techno studio apps. It falls under the Personalization category and offers a range of features that allow you to track the online and offline activities of people, especially your kids.

The app provides you with detailed reports about their daily activities and online presence. You can easily track their online and offline times and see their daily online activity count. The app also includes a last seen online tracker that allows you to keep track of when your contacts were last online. Additionally, the app allows you to chat with your contacts directly without having to save their phone number.

Overall, WhatsRadar is a useful app for parents who want to keep an eye on their kids' online activities and ensure their safety. The app is easy to navigate and provides detailed reports that are easy to understand.