The best alternatives to Friend Filter Pro are Hushbook, Who Deleted Me, and Unfollow on Instagram. If these 3 options don't work for you, we've listed a few more alternatives below.
Feeday is the easiest way to browse and share Instagram feed from widgets screen. Create custom feed in a minute and see them without unlock your iPhone. Featured on the App Store “BEST NEW APPS” in more than 40 Countries (July 2015). Feeday app works on iPhone, iPad, iWatch and iMessage extension.
The FriendFilter robots will crawl your Facebook page and report back on who is engaging with your page and who is not. You will be able to find the friends who are engaging with your posts, and automatically remove the friends who are not engaging.
Do you want to know who dares to unfollow you or not follow you back? Unfollowgram is your personal inspector who has the answers! It analyzes and manages your follower list on Instagram and Twitter.