This app was mentioned in 3 comments, with an average of 1.00 upvote
Seems like a really invasive app to grab a photo or video from IG.
I use InstaSaver -- simple and to the point without having to buy coins or earn downloads, just copy the share url and paste.
Been using this for 6 months. Works great.
https://play.google.com/store/apps/details?id=com.skwirrl.instasaver
InstaSaver - best by far.