The reason why these apps do not work is because the Instagram API does not share this information with third-party suppliers as well, making it nearly difficult for these third-party app developers to provide such capabilities to their clients through their apps. Using these apps will at the very least result in a randomised list of Instagram users who may or may not have anything to do with your account, and the worst part is that some of these app developers charge you a sum of money to obtain these apps, which is once again a very unethical thing to do in this day and age.
Finally, all we can tell you is that there is presently no method to view who has visited your Instagram profile, and it does not appear like Instagram has plans to implement such a function in the near future.
