If you use Instagram and Pinterest for your personal use or for promoting products and stuff you probably need to manage your accounts to keep track your followers, to make everything you possible could do to gain more followers. This mean that you have to manage your account.
SnapChum for Android is a new app that help you do this easily. One interesting feature is that you can see your non followers (that users who you follow but they dont follow you back).
Another nice feature is that you can have your Pinterest and Instagram account managed on one app and you can login to any number of accounts you may have.