InRadar: IG Online Last Seen is a free Android app developed by InOnline under the Utilities & Tools category. It allows users to track the online activity of their acquaintances on social media platforms. With this app, users can receive notifications about when their desired accounts are online and track their likes, comments, and followers.

One of the most significant features of InRadar is that it keeps the user's privacy secure. It does not require any login credentials to track the activity of the desired account. Additionally, users can view profiles privately without the fear of their activity being traced.

The app provides a timeline of all the activity of the desired account, and users can track multiple accounts simultaneously. With daily notifications, users can stay up-to-date with the activity of their acquaintances on social media.

However, it is important to note that this app is not associated with or affiliated with any social media platform. It is important to use this app with caution and respect the privacy of others.