WhatsMonitor Online is an Android application developed by WT Online Systems that allows parents to keep track of their children's online activities. The full version of the app offers real-time notifications to alert parents when their child is online, providing peace of mind and a way to monitor excessive use. The app also provides detailed intervals for WhatsApp and other app usage, allowing parents to see which apps their child is spending the most time on. The app offers a history of the last seen and intervals available for two months after activation.

Overall, WhatsMonitor Online is a helpful tool for parents who want to monitor their child's online activities and usage. The app is easy to use and provides valuable information to help parents make informed decisions about their child's screen time.