How did this site get my profile pic automatically?

[JCruzFit]

I created an account, confirmed it, then noticed how my facebook page profile pic showed up by default

 

[yeye]

It must be that app called gravtor I saw it i think in the profile menu when registering earlier today . I am not tech savvy but I think if you have a pix of you saved on it somewhere the app is able to automatically update
cheers