WhatsAgent

WhatsAgent is an app that lets you get notifications whenever a certain person opens up WhatsApp. Do note that this is a paid service that requires a subscription, which you can buy right in the app. It can only be used for free for 24 hours. The way WhatsAgent works is simple: enter the phone number you want to track. Then just sit back and wait. Every time this phone number goes active on WhatsApp, you'll get a notification. And not just that – the app also creates a full connection report. ...