Instok - Who Viewed My Profile is a free Android app developed by Lotus Soft Tech in the category of Social & Communication. The app claims to help users find out who viewed their profile, who blocked them, and who unfollowed them. It also allows users to watch stories secretly, see who's watching their stories without following them, and read messages unnoticed.

The app has a simple and user-friendly interface, making it easy to navigate. Upon opening the app, users are prompted to log in with their Instagram account. Once logged in, users can access the various features of the app. The app also provides instant notifications for profile views, unfollows, and messages.

Overall, Instok - Who Viewed My Profile can be a useful tool for Instagram users who are curious about who's viewing their profile and interacting with their content. However, it's important to note that Instagram does not allow third-party apps to access this type of information, so the accuracy of the app's results may be questionable.