Profile viewer apps offer much, but deliver little.
You can not surely say that these are your facebook profile visitors as Facebook does not confirm this list is based on.
Basically, this is the most loved app among all.
And one another point which I like to share about this is only those who visit your profile from chrome can be mentioned by chrome as a visitor.
If you switch to a business account you gain access to more insights into your Instagram account including how many visitors you get.
At the time of testing, all this seemed to do was promote the app across timelines and encourage more installs, so the main aggravation here is the knowledge that you installed something useless, and then started beaming said uselessness to all of your contacts.