InstaFollow for Instagram is basically a manager for your Instagram account that has many more features than the official app. In fact, it includes a lot of interesting information such as a list of your most and least active followers and which ones are spammers.
InstaFollow for Instagram is a powerful management app for Instagram. With it, you'll have access to a lot of interesting information about your account. The premium options (paid) even let you see a list of your best followers (those who comment the most and give a lot of likes).