Tagsdock - Tag Instagram photos instantly from your iOS keyboard.
Splitwise - Splitwise is a free tool for friends and roommates to track bills and other shared expenses, so that everyone gets paid back. On the web, iPhone, and Android!
Metaplug - Search engine for Instagram
Kittysplit - The easiest way of sharing costs with a group of friends
Jetpack App - The fastest way to copy your hashtags for Instagram
ihatemoney - Manage your shared expenses, easily