Instagram is world’s famous photogrphy sharing and tagging app for mobiles peoples use to enhance their popularity you can join it also from mobile.
Here is a awsome app Unfollowgram that tells you who unfollow you from instagram.
Official Brief Detail :
UNFOLLOWGRAM is online service to check who unfollowed you on Instagram.
You can check your Instagram unfollowers on your mobile or desktop device.
Check your Instagram unfollowers right now!
HOT NEW: check who doesn’t follow you back on Instagram or who you don’t follow back on Instagram!