Circle: Find Nearby Friend. When I remove the app from Facebook, it may still have some data. What do I do?

[M]

I think I accidentally clicked on Circle: Find Nearby Friend app on Facebook. I found it in my log activity. I don't use it. When I remove it from my Facebook account, it said, "it may have some data or information. Visit privacy policy or contact the developer to remove information." I am not sure if any information may share with Circle: Find Nearby Friend, and it may have some information.

If you ever used Circle: Find Nearby Friend, you can let me know about it. Can you please help and find information?

I will appreciate for your help.
I did not add the phone number to app.

[Leon]

Whatever info you provided or was on the facebook account that you used may or may not have been stored by the 3rd party app (Circle); depending on their internal process. There is no easy way for you or anyone else to know what they will do, or have done with your information.